Let's all keep calm and look at the facts
This is Rumor Control:
This is a potential issue for ALL cell phones! Tried to stuff iOS 5 onto your iPhone 2 lately? As for Android, it matters little what Google does, as the Carriers lock things down and then delay or simply abandon the idea of upgrading devices all together. Look it up and you will find that the overwhelming majority of Android devices are now 3 generations away form eating their Ice Cream Sandwiches.
yet somehow they survive.
And for the uninitiated, if you want to Root and hack your Windows Phone - go ahead. There are large Communities of similar minded people out there who will help you - and MOST of them are on XDA (which originated as a home for Windows Mobile Hacking - not Android). For that matter, Microsoft was the ONLY Phone company in history to actively SUPPORT and make Official hacking of their phone OS.
Sure, Windows 8 might be such a humongously magnificent upgrade to 7.5 that it can't be run on the current (Gen 2) Windows Phones, but the smart money is against this idea as nothing about WinPhone 8 that is known would make it problematic.
Remember, this isn't Android - it's highly efficient, optimized code. WinPhone doesn't need some Octo-Core behemoth with a portable nuclear power plant to keep its battery charged. My Lumia smokes all the Androids around here at pretty much any task, and my previous Titan I and HD7s did too. So adding in support for multi-core processors is unlikely to lead to them being obligatory to make it thru the day.
The only thing that might scuttle Gen 2 devices would be if WinPhone 8 only supported higher resolution screens. Not likely as MSoft would be risking losing a lot of its fledgling Customer Base, particularly those who invested in a Nokia phone this year.
So while this is a theoretical possibility, that is true for EVERY Phone ecosystem out there, and experience has shown it is all but guaranteed to be a problem for Android Owners, and can be expected to crop up every few years for iPhone Owners. WinPhone has so far supported and upgraded its Customers faster and more completely than ANY other phone company (look it up!) and has left no-one behind.
If Ars Technica wanted to be honest about it, they should have said that while Android and iPhone Users can expect to have their devices abandoned, it waits to be seen how Microsoft will handle this next generation of their Phone OS