This leads into my main questions:
1. Save games will not transfer between PC and XBOX 360/PS3. What about transferring save games between PS3 and PS4?
2. If I play Diablo 3 on PS3 and then later on PS4, will by trophies transfer over, or will it be like how the PS3 and Vita have different sets of trophies for certain games (Metal Gear Solid HD Collection). They probably won't transfer over, but still an interesting question.
I bring this up because I'd like to start playing Diablo 3 on my PS3, and then when the PS4 comes out, continue my progress on that. I already have a PS4 preordered, but am not sure when Diablo 3 is coming out on PS4.