Even though Microsoft’s big MIX event is still days away, the Windows Phone 7 Series development platform is already pretty well defined. It’s also clear that Microsoft wants to keep things tidy for developers by requiring all WP7 phones to meet a certain base-level spec.

Now, thanks to a post from Microsoft’s Shawn Hargreaves, we know the display resolution for the first batch of Microsoft’s next generation phones: 480 x 800 (WVGA) pixels at launch, with a future update that will introduce a 320 x 480 (HVGA) native resolution.

Dedicated hardware will ensure image scaling across all those pixels without taxing the GPU. That allows game developers, for example, to write to a lower resolution (requiring less horsepower) and then scale up as required while remaining compatible to a variety of screen resolutions.

via Engadget