Okay, this Deutsche Telekom statement is already 12 days old but nevertheless, it's really important and confirms what I have posted before. The Nokia Lumia 900, which was launched with Windows Phone 7.5, won't receive the Windows Phone 8 aka Apollo upgrade. Furthermore, the support agent confirmed on T-Mobile's very own support forum, that Windows Phone 8 will come in Q4-2012. For the background: Many T-Mobile customers asked in the forum when T-Mobile plans to launch the Lumia 900, which was only released in Germany last week and the T-Mobile employee confirmed later, that T-Mobile has no plans to launch the Lumia 900 because it's not upgradeable to Apollo.
Therefore, T-Mobile decided to not launch the 900 because it feels that the frustration is even bigger if customers find out later this year that their brand new and expensive device isn't on the list for upgrades. On the bright side, not a single first generation Windows Phone will receive Windows Phone 8 but Apollo is made for the second generation of Windows Phones only, with enhanced specs and feature-sets.
Some can argue now how valid such a posting of a support agent is but as far as I know the German Telekom (and I know it well), I can tell you that such an info only make it to the public if it was triple-confirmed and authorized! Therefore we can say that this info is 99.5 % valid.
So far, neither Microsoft nor its OEMs made any public statements about the upgradeability of today's Windows Phones with the note that Windows Phone 8 is not yet officially announced. At least T-Mobile plays with an open deck, if only on its support forum, but this is really appreciated.
UPDATE 1 - 20.06.2012: A T-Mobile spokesperson just contacted me and said, that "this isn't an official statement from Deutsche Telekom" and that she has "no information where the statement above came from". As a matter of fact, I was told that "there are many reasons why a device is ranged or not", without going into details.
While I appreciate Deutsche Telekom's feedback, I still believe my other sources which told me that no Windows Phone will receive an upgrade to Windows Phone 8. Nevertheless, I wanted to share Deutsche Telekom's official feedback with you.
UPDATE 2 - 20.06.2012: During its Windows Phone Developer Summit, Microsoft today confirmed that non of today's Windows Phones will receive an upgrade to Windows Phone 8 but Microsoft will offer a Windows Phone 7.8 feature pack update instead only.
Cheers ~ Arne