A considerable amount of changes have been incorporated into the Beta release. This thread tries to point out some of the issues which may occur:
1.) Almost all Mobility API's have changed. This may cause compile and runtime breaks. The list of API changes can be found in SRC/dist/changes-1.0.0-beta1
2.) API headers have been moved from /epoc32/include to /epoc32/include/applications (contacts and versit API) and to /epoc32/include/middleware (all remaining APIs). This may cause issues with tech preview headers which may still exist under /epoc32/include. TP header files must be removed before attempting to use the Beta release code. All QtMobility headers start with the letter q.
I will add points to this post if required.