Rumours that originated from a post at XDA suggest that HTC will be launching the HTC Touch Pro 3 in the 3rd Quarter of 2010.

If this is true it suggests that the HTC Touch Pro 3 will ship without Windows Series 7 and will still run on the older Windows Mobile 6.5.

However, it’s also equally as likely that the HTC Touch Pro 3 will be upgradeable to Windows Series 7 when it launches.

It’s thought that the HTC Touch Pro 3 is the same mobile that was leaked earlier this year which was then known as the HTC Tera. If this is the case it will have a 3.0 inch touch-screen and a sliding QWERTY keyboard.

Once we hear more about the HTC Touch Pro 3 we’ll be sure to let you know.