Version 1.0.6 "game balance adjustments" for Super Smash Bros. Wii U?

Nintendo does not release any changelogs. The only ones that exist are crowdsourced by Smashboards and r/smashbros reddit, and are done by just people noting things and testing on an unpatched system.

I do diffs of the raw data files and upload them to my website here, but I haven't done the new patch yet. http://opensa.dantarion.com/s4/mastercore2/

The community changelog is here: http://smashboards.com/threads/mewtwo-patch-version-1-0-6-thread-updated-sun-10pm-pst.398902/

v1.0.6 patch notes courtesy of DrWeeGee on Reddit

Menu/Game/Misc. Updates:

• Names/Tags stay on controller ports on WiiU when switching modes
• "Save replay" dialog box now defaults to "OK" instead of "Cancel"
• CPU AI adjustments- Lvl. 9 AI now can drop down to the ledge and attack as you recover
• Higher level CPUs are more likely to smash attack you when you you break shield, as opposed to a random attack
• Wii U - after setting up amiibo to farm: the gamepad no longer shows the character screen in consecutive matches if you have turned it off in the first one, it goes right to the fight.
• Any replay from 1.0.5 (or older) will not be playable in the Replay Viewer

• New Sound Effects + Ryu/FE Roy

• Pressing A+B simultaneously = smash attack (this function may be turned ON or OFF)

• You can now turn off rumble for all controllers instead of having to do so with names
• DLC credits added
• The Character Select Screen has been remapped for the inclusion of Mewtwo
• Mewtwo appears in Stage 3 of All-Star Mode only if you bought/redeemed him
• Mewtwo's silhouette is added to the background of menus
• Mewtwo avatar available for online profile picture
• Mewtwo sounds added to Sound Test
• Mewtwo has 3 trophies: the alternate, the character trophy from Classic, and the final smash from All-Star.
• When playing FG, if you don't press any button between matches, you will be automatically disconnected
• In the eShop tutorial there seems to be a new icon for the 3DS with no buttons, presumably because there's no standard button arrangement (now thanks to the New 3DS XL)
• Transferred Mii Fighters (from 3DS to Wii U) lose their headgear if you don't have that headgear unlocked on the Wii U version
• Holding Up/Down with the directional stick and and trying to do a smash in that direction with the C-stick no longer does a tilt
• Tilts/Smashes while holding an item has been removed (Link, Megaman, Peach, etc)
• When playing with friends online, a mic soundwave next to your tag appears whenever you speak
• RNG improved/altered for unlocking new abilities/gear/Mii head gear in all modes
• Announcer will say "Special Smash" for special smash mode

Character Updates:

Bowser

• Koopa Klaw (Side-B) control of movement prioritizes Bowser more

Bowser Jr.

• Fsmash improved hitbox
• Rapid Jab (Neutral-A) has less visual whiffs

Captain Falcon

• Rapid Jab (Neutral-A) has less visual whiffs
• Bthrow trajectory extremely small change
• Dsmash down-angled knockback reduced (UNCONFIRMED)

Charizard

• Fire Blitz (Side-B) self damage increased 5%+4%: 9% total -> 5%+5%: 10% total
• Uthrow buffed 8% -> 11%
• Fair sweet/sour hitboxes switched
• Fly (Up-B) knockback increased

Dark Pit

• No change

Diddy Kong

• Uair nerfed 8% -> 6%, knockback reduced
• Fair nerfed 12%/10% -> 10%/8%, knockback reduced
• Uthrow nerfed 10% -> 8%, knockback reduced
• Dthrow nerfed 7% -> 6%, knockback unchanged but hitstun reduced
• Monkey Flip (Side-B kick) nerfed and new hitbox 14%/12% -> 14%/12%/10%, knockback reduced
• Monkey Flip (Side-B grab) nerfed 12% -> 10%, knockback reduced
• Banana (throw) nerfed 7% -> 5%
• Fsmash increased end lag

Donkey Kong

• Fsmash improved hitbox

Dr. Mario

• Fair buffed 16% -> ~<16.5%-16.8%>
• Usmash new diagonal trajectory

Duck Hunt

• No change

Falco

• Usmash no longer whiffs the 2nd hit

Fox

• Rapid Jab (Neutral-A) has less visual whiffs

Ganondorf

• Jab (Neutral-A) buffed 8%/6%/4% -> 10%/7%/4%
• Uthrow, Dthrow, Fthrow modified hitlag (reduced)

Greninja

• No change

Ike

• Aether Drive (Up+B) behaves normally when <1 speed in training

Jigglypuff

• Flower damage buffed 35% -> 36%

King DeDeDe

• No change

Kirby

• Dthrow buffed 6% -> 10%
• Inhale (Neutral-B) reduced end lag
• Flip Hammer (Side-B) less end lag
• Final Cutter (Up-B) visual effects improved
• Usmash and Dsmash knockback increased

Link

• Up-B buffed, uncharged 12% -> 14%, fully charged 19% -> 22%
• Jab-infinite removed
• Jab-cancels nerfed -> +7(?) frames
• Usmash no longer whiffs the 2nd hit
• Shield blocks Fox/Falco Lasers (Neutral-B)

Little Mac

• KO Punch will always take a step forward. No more wind whiffs.
• Jolt Haymaker (Side-B) knockback increase

Lucario

• Extreme Speed RCO from low-lag landings removed

Lucina

• Shield Breaker (Neutral-B) buffed, uncharged 8% -> ~8.6%, fully charged 21% -> 23%, buffed knockback
• Fair, Dtilt, Fsmash, Dsmash second hit buffed ~0.5%

Luigi

• Fireballs sour (like Mario's) 6%/6%/6% -> 7%/6%/5%

Mario

• No change

Marth

• No change

Mega-Man

• Ice Slasher custom fires faster and fires at the peak of your short hop instead of slightly later
• Leaf Shield (Down-B throw) reduced start lag, increased end lag
• RCO (Up-B) issues removed

Meta Knight

• Nair decreased end lag 20 frames -> 18 frames
• Dimensional Cape (Down-B) landing lag bug removed

Mewtwo

• New Character

Mii Brawler

• Piston Punch "one inch punch" fixed
• Bair nerfed 12% -> 10%
• Fair nerfed -> -2% base damage

Mii Gunner

• No change

Mii Swordfighter

• Hero Spin (Custom Up-B 3) buffed, uncharged 12% -> 14%, fully charged 16% -> 19% on the ground
• Dtilt buffed 6% -> 8%
• Nair buffed 5% -> 8%

Mr. Game & Watch

• No change

Ness

• Fsmash (Bat) plays hitsound when reflecting projectiles

Olimar

• Fox-Olimar glitch removed
• Dash-grab issue fixed

Pac-Man

• Team double Pac-Man stalling nerfed - trampolines disappear after time (UNCONFIRMED)

Palutena

• Super Speed Jump Install removed
• Infinite Lightweight glitch on platforms has not been fixed

Peach

• Dthrow trajectory (5 degrees) changed

Pikachu

• Ledge-grab time nerfed -> +12 frames

Pit

• No change

R.O.B.

• Uthrow knockback reduced
• Visual glitch that can cause ROBs thrusters to go off indefinitely has been fixed

Robin

• Levin Sword Durability Indicator Glitch Fixed
• Rapid Jab (Neutral-A) has less visual whiffs
• Tomes no longer disappear if they touch a platform

Rosalina and Luma

• Luma HP nerfed 52% -> 48%
• Luma Dtilt 2nd hit buffed 3% -> 4%

Samus

• Ftilt has more hitboxes 6%/7% -> 5%/7%/8%
• Regular Missiles slightly faster

Sheik

• Bair nerfed 11%/10%/5% -> 8%/7%/5%
• Dtilt nerfed 7.5% -> 5%

Shulk

• All-Monado picture glitch with Yoshi removed

Sonic

• Bthrow nerfed
• Spindash fully charged nerfed 10% -> 7%
• Spindash Jump Nair nerfed ~(27%-28%) -> 22 %
• Flame Spindash partial intangibility removed, (no longer goes through moves like Sheik needles and Fox lasers)
• Homing Attack no longer targets objects like Duck Hunt's explosive can or Luma

Toon Link

• Dsmash hitbox properties altered - first hit knockback reduced and reduced damage, second hit whiffs if you aren't close enough
• Shield blocks Fox/Falco Lasers (Neutral-B)

Villager

• Can't pocket Sonic's spring anymore
• Can't pocket Pac-man's Trampoline anymore

Wario

• Little Mac KO Glitch removed
• Bike Glitch on Palutena's Temple fixed

WiiFit Trainer

• No change

Yoshi

• Ledge Attack reduced end lag

Zelda

• Fsmash improved hitboxes
• Bair sweetspot visuals effects improved
• Phantom Slash slightly decreased end lag
• Destroyed Phantom regeneration time nerfed 6 sec -> 9 sec
• Phantom field time increased, ~1/4 sec longer after attacking

Zero Suit Samus

• No change

Level Updates:

• Omega/Lylat Cruise level edges are sloped, so you don't get stuck under the ledge anymore
• Wuhu Island Boat instant kill glitch removed

• Mario Circuit glitch removed(?)

• Mewtwo's Boxing Ring title is "A Legend Reawakens".

• Added 6 new 8-Player Stages (All Omegas):

  1. Delfino Plaza
  2. Port Town Aero Dive
  3. Woolly World
  4. Orbital Gate Assault
  5. Wii Fit Studio
  6. Pilotwings