Here's one, I'll see if I can find the other one I was looking at. Latter half of the video contains Alpha footage, btw.
EDIT: Found it
EDIT 2: So I don't know where one is getting the idea that Kokoro has no decent launchers (I think she does have a few good ones), but based on a few video glimpses of DOA5U gameplay, it seems Kokoro got a few tweaks that players may not be happy with.
It seems all her sit-down stuns have been removed and replaced with a new non-recoverable bounding stun, hard to say how this'll turn out though. Her 6P+K reverted back 1.0, so it no longer has a stun added to guarantee the P follow-up (it wasm't a natural combo either way). I haven't see the mid sabaki used at all, which means that no one had found the input yet, so it doesn't look like its replacing an older move.
Her standing P seems to have gotten a slight buff, instead of being negative on hit, it appears it got a +2 on counter hit, which might make it slightly more useful when fishing.
Kokoro's 7P sabaki deflected all highs and special highs, but I don't know if it'll continue to apply in DOA5U, or if they moved to to simply deflecting punches.
None of Kokoro's throws (66T and Heichu 236 throw) seems to have been buffed or given offensive hold properties.
Essentially, it seems like the biggest changes Kokoro may have gotten were to her defense so that she could remain on the offensive a little better. She may have some new combos to work with too. Either way, the mid sabaki, if its capable of stopping many mids, would be a big boost to her defense and allow her to deal with a lot of pressure. Her tracking issues don't really seem all that big to me considering 6PP and 46PP were both pretty good at punishing steps.