First off all, I expect the focus to be squarely on BlackBerry 10, with no time at all spent on the current BlackBerry 7 devices, and even the PlayBook being most ignored.
I think that RIM will show off their first two BlackBerry 10 phones. Even if a hands-on is not available, I think that RIM will be able to show off final renderings for the devices, and set expectations. Some may worry about an osborne effect, but that ship has already sailed.
I also expect RIM to release some version of BBM for the DevAlpha, as the roadmap indicates that the BBM APIs will be available.
I would love it if RIM would release a simulator for every BlackBerry 10 screen size that they plan on releasing. While the first phone will match the 768×1280 of the DevAlpha, it would be nice if there were simulators at 720×720, 720×1280, and 600×1024 as well. Most apps will be designed to work at all orientations, but it would be nice if there was an easy way to test this.
Most of all, I hope to be surprised. That RIM still has something up their sleeve that I don’t know about. Something that hasn’t been endlessly leaked on every blog. RIM did a good job with this at BlackBerry World in the spring, hopefully they can do it again.