Don’t get confused … yes it is actually a Windows 7 upgrade and not Windows Phone 7 upgrade! Since the announcement of Windows Phone 7, there have been many speculations about the much awaited upgrade for the HD2 to Windows Phone 7.
Some credible sources like HTC Russia had first confirmed, but later denied this. Even Microsoft has said that none of the current devices will get an upgrade to Windows Phone 7.
PocketNow posted about HD2 getting a Windows Phone 7 upgrade, but after a while retracted the statement. The Upgrade the Polish carrier are providing is indeed the Windows 7 upgrade and not the upcoming Windows Phone 7 upgrade for the device as mentioned in their official product page.
They will be providing the Windows 7 Home Premium upgrade with this offer for HTC HD2.
Sadly for those who still have the HTC HD2 will have to buy a new Windows Phone 7 device, or be happy with the Windows Mobile 6.5.