WOW!! Saw this on DIGG, what a great tip, THANKS LOTS!!! I've been eligible for upgrade since 2003 but have been hanging back waiting for the right offer, I've even called them and was getting NO satisfaction, until now.
Went to the SERO site and clicked the order by phone, altho I could have done it online. The Sprint SERO site is actually hosted by INPHONIC, and if you call you'll be talking to an INPHONIC rep, not Sprint, but it's all good.
There's also more info re this offer at
http://zarlwilliam.blogspot.com/2006/01/sprint-sero-plan.html
Thanks again!!