I was just checking out the PPCGeeks website, checking up to see if anyone had any status updates on the Sprint Mogul PPC. I've had this phone since late August, and have been waiting for a promised upgrade which is supposed to finally enable the built-in GPS-A support and support for EVDO Rev A. It finally looks like it may actually see the light of day on Monday, according to this post. It would have been nice to have had it released on Friday so I'd have the weekend to get it installed and get my phone customized again, but as a developer, I can appreciate not doing a release on a Friday.
I'm hoping Google Maps will support the built-in GPS. I've got an external blue tooth GPS I could use, but it's just not as convenient as something built-in. I'm not really looking forward to reinstalling all of my applications and customizing it with the HTC Touch interface (which is a MUCH nicer interface than the stock one), but thankfully this isn't something I have to do on a regular basis.
Links:
http://forum.ppcgeeks.com/showthread.php?t=20363
http://www.america.htc.com/support/mogul/software-downloads.html
http://www.google.com/gmm