Touch Pros are still selling fairly well I believe from many carriers not just Sprint.
Some of those carries do not have the TP2 so TP is I believe far from fading.
That said, I do not see a reason for Sprint to release a NEW 6.5 rom but that doesn't mean they won't.
Would be a good idea to keep all the business customers happy.
They may or may not release a 6.5 rom for their customers but really who cares because most of use won't leave our custom roms anyway.
NRG rules and no rom Sprint releases will better it.
The only benefit I really see is a true TP 6.5 rom for custom rom cookers to build off of.
Other than that?