Not from HTC (as yet), but in the next couple of days the file 'RUU_Kaiser_HTC_WWE_3.28.405.0_radio_sign_25.83.40.02_1.65.16.25_Ship.exe' that you can find here will also become available via official channels!

The update is for HTC TyTN II devices, and will be followed later by a AT&T branded update. The update adds Windows Mobile 6.1 with improvements such as the 'Getting Started' wizard, Threaded SMS and general performance and battery life updates, as well as HTC's 'video performance' update. So what's it like? Performance IS improved, however with no real video acceleration, don't get your hopes up TOO much! Thanks to tweaks in 6.1 in general plus HTC's optimisations, the device DOES feel a lot slicker in use, although if you are coming from a 'cooked' ROM you have probably seen the speed improvement already. If you are still on the standard 6.0 ROM, you NEED to install this