HTC and Dopod is releasing Windows Mobile 6 Professional upgrade to few of the Dopod pocket pc phone. The Dopod D810 will get the upgrade from July 10, follow by Dopod 838pro from July 12, Dopod P800w from July 13 and lastly Dopod U1000 from July 20.

The software update website is now opened, you can access it via the link below.

http://www.asia.htc.com/asia/event/WM6/index.html

While you are upgrading to Windows Mobile 6, here are the things you need to know

• Upgrading the ROM Code erases all of personal data and custom-installed applications from the device. Make sure all of your personal information and data are backed up to your PC via ActiveSync or Windows Mobile Device Center. After updating the ROM, copy the data back to your mobile device and reinstall your applications. 
• Third-party applications may have compatibility issues with Windows Mobile 6. Please consult with the software developer before upgrading to Windows Mobile 6.
• Make sure the remaining battery power is above 50% before performing a ROM upgrade.
• Before upgrading the ROM, remove the miniSD (U1000, D810 and 838Pro) or microSD (P800W) memory card from your device. 
• Note that once the operating system is upgraded to Windows Mobile™ 6, it cannot be downgraded to Windows Mobile 5. Consider your options carefully before you upgrade.

Read the full notes here

Source [xda-developer] via engadgetmobile