Sprint probaably gave made them an offer they coudn't refuse, based on the quality of this phone and the new OS.
This is the iPhone + G1 on steriods, and the phone itself is designed incredibly well, physically.. that rotating back to expose the keyboard is ingenius!
It's so logical, that it proves "form follows function" does really rule!
The most important factor here is the new OS going forward.. whatever they release in the future for us GSM will be related to this, for sure.
And, now that we see that Palm can design a really hot looking device again, we can all be optimistic, and patient, if need be, for when there is a GSM offering.