No.
IMO the only solid vita showing was the NGP unveiling. Otherwise it's been pitiful.
I don't expect anything amazing at gamescom. There are a few ports I heard about months ago that are still unannounced so hopefully they haven't been canceled and they will be there. I haven't heard a peep about any new IPs or other big games though. That doesn't mean they don't exist... what I don't know could fill the atlantic ocean - but if there was something huge I would think there would be a whiff of it, somewhere.
The redesign is happening in 2014 as far as I know and I dont expect it to be talked about during gamescom (why would they? could hamper sales over the fall). I do expect a price drop. I also expect the 64gb card to get announced and each card to slide down one slot (with the 4gb being discontinued) so memory prices will be heading towards reasonable. The 64gb card, i was told at e3, depends on them getting rid of stock of older cards though (im guessing primarily the 4gb? It wasn't clarified) so that is a bit more up in the air.
If I had to guess I would bet it will be price drop, killzone, tearaway, hohokum, a few unannounced indies, a few unannounced ports, and hopefully maybe please internet jesus atleast a tease at another big first party game.