But unlike its predecessor, updates to Windows Phone 8 should work with existing hardware specifications while being flexible to run on newer devices with different specifications. "Windows Phone 8 can evolve. We have an architecture that enables portability and is fundamentally hardware independent," he said. "As the market evolves and customer requirements demand it, we'll evaluate options."
This flexibility is also why Nokia has been able to launch two ‘low-cost' handsets at this year's event that still offer much of the same user experience and features of the current flagship handset the Nokia Limia 920.
"The hardware guidance for Windows Phone ensures that even the low-cost Windows Phones deliver great performance," Sullivan said. "You don't make sacrifices on a Windows Phone. If you have an Android phone that's affordable, you don't have the latest software, you can't run a large percentage of the apps and performance is not awesome."