The specs have been posted here, where the Bionic was compared to the Moto Droid 3 (already available at Verizon) and the Moto Photon 4G (launched by Sprint). While the Bionic has now disappeared from the website, Droid-life has managed to take a print screen of the specs.
The Droid Bionic will have a 4.3 inch qHD (960 x 540) display, LTE connectivity, dual-core 1GHz TI OMAP processor, 1GB of RAM, 8MP rear camera with 1080p video recording, and a VGA front-facing camera.
source: Unwired View