I have credible sources from broadcasters that tell me every Toronto Raptors home game that's on TSN will be available in 4K on TSN4k. No plans for Raptors in 4K on any of the Sportsnet feed at the moment yet.
From what i heard and seen, Rogers and Bell only showed Raptors in 4K on 11-16-16 vs the Golden State Warriors. Checking Bell's website as well only shows this and no other Raptors game. So i guess Bell and Rogers won't be playing any 4K Raptors games for a while unless it changes.