I think Storm3 is going to be the slider!
Think about it. Screen is about same size and it has a full keyboard. That would be advanced enough for RIM to tag it as a new Storm3. I think the 9800 is the Storm3. There is no way that RIM could have kept another device under wrap so long and possibly release it soon as it looks like the Storm2 is about to get pulled off the shelves.
What do you all think?