I'm not familiar with RAD, but I found this:
www.ibm.com/developerworks/mydeveloperwo..." Rational Application Developer (RAD) V8.5 and the WAS Developer Tools (WDT) V8.5 have landed! [...] Hot off the press, RAD includes
IBM Worklight Studio V5.0 from the IBM Mobile Foundation family so that if mobile web isn't your thing, you can dive right into native or hybrid mobile application development."
Feel free to ask for more details or other questions in our public forum, it's heavily monitored by our developers. Here's the link: http://www.ibm.com/developerworks/forums/category.jspa?categoryID=512