Just my own prediction.
iPad 2 will still be available but for $399/$499/$599 in Wifi Only and with A5X.
This will make it more competitive.
iPad 3 will have A6, Retina Display and 3G/LTE models staring at $629.
No iPad 3 Wifi Only. That's the upsell and the way they will push everyone into the cellular world.
You realize that would make zero sense, right? Apple gains nothing from pushing iPad customers onto carrier networks. It would dramatically slow adoption and push wifi only users to their competition.
Makes even less sense than the price bump rumors that started going around yesterday.