At the AMD analyst day the company confirmed it is working on a next-generation mobile processor:
This new processor is intended to go where Turions fear to tread: into ultraportable laptops and other places where the Turion's power and cooling requirements have been prohibitively steep. The company has previously hinted that such a development was underway, but wouldn't talk publicly about many details.
We now know several things about this new mobile part, including the fact that it's scheduled for release some time next year. Given that schedule, it will almost certainly be manufactured at 65 nanometers. AMD plans on making two versions of this chip, one of which will be aimed at ultra-low-voltage applications.