As far as I'm concerned we're getting a retina display, simply for these three reasons:
1) 2x size images for iPad found in iBooks app in iOS 4.3 Beta
2) SGX543 drivers found in iOS 4.3 Beta
3) GlobalDirectParts had a 2048x1536 resolution screen listed for sale @ ~$220 titled something like "iPad 2 LCD Screen"
1. iBooks is not part of iOS 4.3, it is an App that is available in the App Store and it's not part of the OS. This x2 size bookmark was released in the 1.2 update back on December 15, 2010, but was just recently discovered.
Also, images that are being found in the iOS 4.3 beta (like the camera shutter and icons) are said to be the same resolution as the current iPad.
http://www.9to5mac.com/47248/is-this-the-ipad-2s-camera-app
2. I have no opinion of the faster GPU, but it just seems like a natural evolution for the GPU to only get better.These screenshots are 1024 x 768 which indicate the same screen resolution as the current iPad. That might upset those hoping for more a retina-ish display in iPad 2.
3. GlobalDirectParts has no mention of the resolution of the screen being 2048x1536, and neither does the article that was posted on MacRumors over the weekend, the article only says that the screen was discovered only after rumors of a high res iPad broke.
but the image appears to have been uploaded this weekend after the 2048x1536 rumors broke.
https://www.macrumors.com/2011/01/16/ipad-2-lcd-for-sale-already-ipad-2-to-include-vibrating-motor/