HTC 6800 hacks, tweaks, or mods??

[jpc0480]

I have Alltel and just recently switched to a 6800 from a Treo 700w/x... Been contemplating on switching to the touch but just don't think I can live without wi-fi. I have WM 6.0 and wanted to know if there was an upgrade available to 6.1? I've seen others say that they have switched to 6.1. If so where would I find the download? I've tried Windows Update from the phone and receive no updates... Also what else could I do to my 6800? Any other upgrades? Could I upgrade my rom? My current version is 2.14.671.3. What are some of you doing to your 6800 and what could I do to make it run more efficiently. I have a problem with Ram and was wondering if anyone knows of a registry hack to be able to get it to use storage either on the device or the micro sd card or another possible workaround?