Rumor has it that there'll be at least two AAA announcements. Though the source is a guy that hasn't been the most reliable "insider". That aside I'm still pretty hyped for this as I'm almost sure there'll be a trailer for Uncharted 4 at the event!
I don't mean TGS itself but rather another Sony press conference. I can't immediatley find any information supporting the notion that another conference will be held, and as such I assumed this was Sony's TGS conference - no matter if it's held two weeks before the show or a day before the show like E3.
Sony's TGS conference is rarely ever amazing, but this was definitely the best one in years. Them actually setting up a decent stage was a surprise in itself!
Crash Bandicoot and Spyro the Dragon were both originally owned by Universal Interactive (which signed exclusive contracts for both series with Sony for the PS1). Their gaming division then later got sold off to Vivendi before Vivendi Games merged with Activision forming Activision Blizzard. So yep, Activision owns Crash and Spyro and while they might sell off Crash it would probably require more money than Sony is willing to spend or that the franchise would actually be worth.