No idea about Wipeout. Maybe you'll get something similar to Rollcage in the future though. London will do something more core oriented, but you'll be waiting.
It gives an idea to expect something more, rather than thinking SCE has announced all their big titles, which one could easily assume due to how 2014 has turned out and the fact that there are quite a few games already due in 2015 (Bloodborne, Order, UC4, Until Dawn, Ratchet, Tearaway etc.). It's not like you'll know a lot more about the title or anything if I tell you this studio is developing it. Not to mention, I also have a limited idea about some of them, so I share what I realistically can.
If I say this is some of what's coming for you in the next two years:
Bloodborne
The Order: 1886
Uncharted 4
Until Dawn
The Last Guardian
Gran Turismo
Sly 5
Sony Bend Project
Guerilla Hybrid project
Sony/Sega project
Sony/Capcom project
What do you learn of the titles who I've just put developers for?