Well the only thing going through my mind right now is that this is actually good news for a project I'm involved with, as it might end up now being a launch title. This means it'll probably sell better because the buzz around launch with a million or whatever people picking up a console and looking for something to play, is better than it would be if they'd bought their consoles over a period of a few months prior to release...
Of course not everyone is in that situation.
Honestly I've never heard of a console manufacturer compensating developers for a late launch, and typically no-one gives us "guaranteed" install-base figures for how many people might buy our games - we just have to take a risk and hope we back the right horse. Despite these delays, Sony is likely to be one of the safest bets for the coming generation, though certainly Microsoft is gaining ground.
What about developers who were already on target to to reach the 'old' launch date/units shipped ?