I found this: The official Windows Mobile 6.1 ROM upgrade for the Sprint Mogul has been leaked early. Yes, it is the official release, not a beta. It will likely appear on the HTC and Sprint website very soon. So if you want to be an early bird?!
Download the ROM upgrade here (mirror site),
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Darkknight
Now I've played with it all day today and one thing I liked so far is the SMS, they made it much better to keep track of you SMS's and they added Sprint TV and they did some tweaks to the OS, like you used to go to the system, memory, and there you used to see what app's was still running , well they moved it, it's now called Task Manager and that's where you can see if any app's is still running in the background, and they added a thing if you like your start menu large or you can make it small, ......... (sounds like a computer don't it?) LOL, now the funny thing is I still had to enter my bluetooth code (0000 or 1234) when I parred my bluetooth headset, maybe I missed something here I thought it was going to do that for me? hhhuuummmm owell maybe it was just my headset, I use the new Jawbone 2 on my cell and it works great with the new update so your good on that :)