A preview stream mentioned stuff like not being reflected by mirrors -personally I glossed over that part and frankly I'm too lazy to rewatch it for just that bit - but it lead to people speculating about Lasombra being playable, but we'll see in a few weeks anyway. In general the previews drop some tidbits about the game already. The clan weakness of the Treme, disciplines being designed around covering at least two of the Fight-Sneak-Talk trinity, etc
Also Geek & Sundry has a V5 game running that might tie people over till Bloodlines 2 drops. I'm enjoying it, it's a fun watch/listen.