I wish D3 was coming out before SC2.

They just put june because its the middle of the year. I say half a year later second sc2 installment, and half a year later D3. So from sc2's original release date we will have to wait a year and a half for D3.

The Starcraft 2 release date seems possible considering a few other sites have placed it at releasing in a similar time space.
The Diablo 3 release date on the other hand seems very optimistic and rather funny that this'll probably change when it hits that date.

Waiting a whole year to respond? Clever.

It's possible they will release d3 in a year. It all depends on how many developers they have any how they structure their development teams.