I'm not very fussed either way.
Apple should only reveal "iWatch" - again, if they are even making it - when they are good and ready. There would be a ton of pressure on such a product, so Apple need to bake it properly.
I would be very happy to see an update to OS X and iOS, even if that's all we get.
For OS X in particular, I'd love to see the visual overhaul, as I think it's somewhat overdue (despite OS X still looking pretty great).
I also think it'll be great to see continued movement on iOS, especially in anticipation of the next iPhone release.
So, either way, I'm happy.
It would be good to see some kind of Apple TV update, but I am not interested in minor iterative updates to that product. I'd be more interested if we saw a radical new Apple TV that incorporates some of the speculated features people have been discussing recently (especially a much better navigation/control mechanism and an App Store, etc...)