HTC have released their plans to provide FREE upgrades to Windows Mobile 6 for their messaging focussed devices.  This includes the the HTC Advantage, the HTC TyTN, the HTC S620 and the HTC P4350 as well as the HTC P3300. 

The updates will be released starting end of April and via their Website

You can read the press release from HTC HERE (courtesy of www.solopalmari.com)