I'll c&p my notes from Evo even though some are the same as The Answer's:
I'm sure more confirmations/edits will be made in the next few days but here is my preliminary report:
-Neomax in HD costs 2 stocks but 3 stocks outside of HD.
-Liz's midscreen, 1 stock no drive 511 damage combo now deals
391-Shen's gotten a slight damage decrease, I couldn't quite figure out where but Kunio's 799 (1 stock HD combo) now does
777-Duo Lon's Ex f.AC now has more hit stun (or better recovery for DL) so that he can do s.C or s.D (before it was a near 1 frame that allowed only for d.A, and if you're close enough you can link that to s.C).
-Duo Lon's NM has finally been normalized and now does
448 instead of his silly 400 he used to do. (Most characters are 450-500 in the arcade version).
-Maxima's air vapor cannon now holds him in place for both version and then after he's done he either goes forward or drops down (I forget), but not backwards.
-Maxima's damage has been decreased slightly.
-Goro's

+K, [DC]

P seems to only work in the corner now (WHY?). His NM has been buffed to
571, yup!
-Kyo's

+K is no longer safe, is also does not build much drive or meter if it connects. It seems only useful for combos from now on.
-Kyo has his air Ex Orochinagi
-All characters that we tested all had aerial Ex DMs like Mai.
-Kyo can do d.B, d.A,

.D [1hit],

+K midscreen now.
-Overall, hit hitboxes have been adjusted and it's harder to cross characters up now. It was noticable as we couldn't get K''s j.B or j.D to crossup.
-Chin is now top tier.
-K''s hop no longer goes over a standing opponent.
-K''s second shell (qcf+P.f+B) now juggles opponent higher and when preceded by an Ex

+P, allows the second shell to hit twice, and hence combo into his

x2+P DM like in the RS trailer.
-Shen's fully charged

+P now only removes 50% of the guard gauge.
-Mai has been
buffed overall. Her air.d+B has faster recovery making it kinda safe, her air.

+P is also safer.
-Mai's air DM now falls "natually" as she travels across the screen a la '95 Mai's hidden air DM.
-Mai's air Ex DM also MaxCancels into NM.
-Mai's Ex Ryuenbu has startup invincibility.
-Mai's A Ryuenbu has a larger vertical hitbox acting like an anti air (assumingly it's like her beta version).
-Terry has a d.A, d.C link which helps his hit confirmation a lot. Gave us an instant Fatal Fury "feel" to it.
-Takuma's stun combo juggles are much harder to perform and the timing is real tight.
-Joe's NM comes out FAST. Can pretty much punish air attacks on reaction.
-Joe's NM when MC'd, will wait for the opponent to drop from the Screw Upper, automatically releasing it for you. It's a damaging MC.
-Joe's Ex DM travels across the screen now.
-Joe's D Tiger Knee now has startup invincibility somewhat similar to XII but not as extreme. B version is faster but has no invincibility.
-Liz's Ex DM now does no pushback on blocked opponents
-Liz's Ex counter only allows followups with specials, not normals.
-Liz still can do the reset DM midscreen still (personally tested).
-Beni's Ex Raijinken now holds the opponent in position allowing you to follow up. I believe CMD.Duc did (corner), Ex Raijinken (qcf+AC), A Raijinken,

+K. Overall CDM.Duc says he's been buffed.
-Ash's Ex

+P now juggles even grounded opponents.
-Ryo's

+A seems faster, his parries are faster, and his Ex

+K seems faster.
-Andy's d.D is slower now and no longer as abusable, it still can hit anti-air but seems to trade more now.
-Andy's Zaneiken is safe on block now, but he's also pushed back really far himself.
-Andy's Ex

+K, d.D is harder to connect now mid screen.
-Raiden's dropkicks have finally has its charge time increased. Despite initials reports, 1.1 did
not change his charge time from 1.0. Personally, I must have charged ove 20+ seconds and I could not get level 3 to come out. If you land the DK midscreen, the opponent will fly away really far not allowing a follow up. His double DK shenanigans still work in the corner.
-King and Hwa Jai's slide both cancel now by themselves.
-King's NM has been fixed, it now goes further and when MC'd does full damage.
-Mature's

+K has better recovery
-Ralf's Vulcan Punch now knocks the opponent away after two hits.
-Clark, sadly, seems unchanged.
-Leona's HD combos have been nerfed slightly.
-Kula's corner juggles seem harder to connect.
-I was kidding about Chin, he seems unchanged.
-Saiki is very strong from what I saw from No.17 and Oscar messing around with him. He feels very mid-boss in terms of damage but I may change my mind later. =)
Once again, I apologize if I misreport something or I have left something out. There were simply
far too many changes to record them all let alone let my overstimulated mind process.
The wait was
all worth it guys , my hats off to SNKP. The game feels like a
HUGE improvement over a near perfect XIII 1.1. Speaking of labels, I dubbed the console version XIII.5 and Aram from Atlus seems to agree with me.
I want to thank Aram, Mike, and Yu (?) for putting on such a fine setup for us hungry fans; you guys are so awesome I can't really say it in enough.
Day 1 reports end but stay tuned as there are more announcements coming throughout this weekend. I need some sleep now.