A very close T-Mobile source just gave us some details regarding the highly anticipated HTC HD2 with Windows Mobile 6.5. While others have reported a March 23 launch, our source tells us that is when MobiTV software goes live — not when the device will become available. For the HD2, you’ll have to wait an extra day and get it on March 24.

According to our source, the device will go for $199 on a two-year contract (as most others are reporting) and $449 for the full retail price. Sadly, and somewhat expected, the device has been confirmed by HTC as being incompatible with Windows Phone 7 software. So, if you were thinking of upgrading the device, you’ll have to hold out for the real thing.

Also, don’t forget that we’re giving away an HTC HD2 so click on over to enter to win!