Clue's in the title, really. If you head on over to Sprint's website, you'll find a page explaining the forthcoming changes to the service for legacy iDEN customers. Nextel users can enter in their zip code to find out which cellphone towers will be decommissioned and the due dates for each one. The program's beginning in New Orleans this month as the towers are thinned out to a reasonable number. Whilst it isn't (yet) the death-knell for the standard, given the network's push-to-talk service now works over CDMA and, you know, LTE, we'd start looking at replacement phones pretty soon.