1] 358/2 Days did NOT suck. It's very well made game.
2]Kingdom Hearts Birth By Sleep is coming this summer, That was Square-enix said on their official website.
3]Kingdom Hearts 3 is in the making, but first Nomura wants to release a Kingdom Hearts game every year, he is making 2 more Kingdom Hearts games before releasing KH3.
Do you mean BBS and Coded as the two KH games coming before KH3, or is there something else in the works, also KH3 might be further away because you have to remember that Nomura's team is also working on Final Fantasy Versus XIII, and Square-Enix want that released this year.
Anyway I have LOVED KH so far but to be honest I dunno if I'll buy another KH game, I was so looking forward to getting RE:Chain of Memories for the PS2 but Square-Enix screwed me by not releasing it in the UK.