Unfortunately there isn't much more, known about the Atom Bay Trail processors other than the leaked information from back in November. If that information is correct, the processors with have a clock speed of around 2.1GHz and support maximum display resolutions of 2560 x 1600 pixels. They will also have new security features although Intel has now elaborated on them.
The first tablets which will feature the new Intel Atom Bay Trail processors are not expected to be launched until later this year, in time for the holidays. So we have a long wait ahead of us. Hopefully we will learn more about the capabilities of these new chips by then.
source - Intel | Engadget