The carriers control when formal releases of OS levels happen for their customers. RIM releases OS packages to the carriers, who in turn test and decide if they will release it. I honestly don't think I've ever seen a carrier pre-announce something that would actually answer your question.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.