Looks like Sprint is going to jump Android 1.6 and 2.0, and head straight to Android 2.1 for the HTC Hero and Samsung Moment. Which is really the most logical solution considering 2.1 is out and about. They previously said that the HTC Hero and Samsung Moment would receive the 2.0 update but we guess they're done being behind on Android OS updates.
As for timeline, it's still the forever vague First Half, 2010. Underpromise, overdeliver we're hoping.
thanks to RamboDroid & Phillip Jackson for the tip!