While I have been very critical of Apple's cooperation in restraint of trade with AT&T, I think that it is naive to look to Apple to solve in software AT&T capacity problems. I think that we are going to be living with AT&T 3G problems for months to years. That is why I have a Verizon MiFi. You may want to consider that as an alternative to your Sprint/Touch strategy.All I know is it better be revolutionary, I played around with a droid last night and it made my 3G feel ancient. Multi-tasking would be nice, although I'm hoping more for a vastly improved notification system as the current one is terrible.
If apple doesn't wow us again this summer like they did in 2007 the only thing that will stop me from that incredible HTC evo will be that it's on sprint. If it comes to AT&T I'm likely getting it and selling my iPhone and getting an iPod touch.