The only confirmed buff is LK tatsu either traveling further or having a expanded hit box. I took a very close look at the video and between the two I believe it’s the former. Besides that was one of the suggestions by Combofiend that he sent in to the dev team.
This is actually a pretty decent buff for Evil Ryu the more I thought about it. This may mean we can hit confirm into LK tatsu against the whole cast now after MK axe kick instead of having to commit to it and then eating a big punishment for dropping our link. I’ve been practicing MK axe kick, cr. LP, st. MP, HK tatsu in preparation for the same combo except it ends with LK tatsu so you can juggle into SRK for more damage. The combo also does a bit more damage and stun. So for a standard punish combo that starts with a cl. HP it’s 382 damage and 540 stun compared to 373/535.
I think the buff was mainly so that MK axe kick, cr. MP, LK tatsu works on the entire cast. But hopefully the combo I’m talking about works on the entire cast because that would be the best thing to come out of this buff IMO.