No additional detail in the article really, I have the same questions I had after reading the headline. Not committed how? Jumped the gun on what?
I can see not wanting to spend time in WM7 when you have Samsung announcing 5,000,000 Galaxy S sold and all of your games don't run on Android yet but why not just come out and say it?
Microsoft put a shot up of it's store with an Angry Birds icon. The developer(s?) of Angry Birds never said they were making a version for Windows Phone 7.
The developers weren't committed to making the game, Microsoft jumped the gun by implicitly saying they were with that icon.
I can see not wanting to spend time in WM7 when you have Samsung announcing 5,000,000 Galaxy S sold and all of your games don't run on Android yet but why not just come out and say it?