Well, the other shoe just fell: there will be no phones featuring Windows Phone 7 on Sprint in 2010 as well.

Reason? It's Microsoft, not the carriers.  

According to an interview with CNet with senior product manager Greg Sullivan:

We had to make some trade-offs,...Even Microsoft doesn't have unlimited resources. We had to prioritize doing fewer things, really, really well.

For the worldwide market, the vast majority of phones are GSM phones, so we focused on GSM first and then plan to deliver an update that will have great CDMA support in the first half of 2011,That's device availability in the first half and we're very confident of that. That's probably a conservative estimate.

Evidently, Microsoft made this decision earlier this year but are just now going public with it, perhaps to give Verizon a little respite from their public announcement today, which seemed to sell-short Microsoft's new mobile OS.

So that's that folks. Yours truly is also crestfallen, so guess I'll get an AT&T account in addition to Sprint. I suppose we can call the hounds off of Verizon, eh?

[Thanks, Stephen, for the tip!]