Yes, it's true! You can build ADF Mobile applications built against an Oracle Forms back end! One of Oracle's partners, OraPlayer, has built a recorder/player that can turn a forms app into a series of web services and a corresponding client proxy class for use with ADF Mobile. You don't have to rewrite any server code and you get extended use and capabilities out of your existing Forms apps.
Here is a great blog article with a demo of the technology.
Join us for a joint Webinar with the OraPlayer folks on February 7th, 9-10am Pacific.
This is a great way to create new state-of-the-art mobile applications without retooling your Forms applications!