I had the email about Sib 6 too

Seems to me they've added a lot more to 6 than they did for 5, and I must say I'm very tempted by the idea of dynamics and things spacing themselves out properly!
Like the idea of being able to link up things like Cubase etc with my Sib, and to be able to play straight into the programme via a mic...I'm playing with some improvisation at the moment and am wondering if this would be useful to look back over and analyse what I actually did/didn't do to improve things... (I find it easier to do backwards than forwards, otherwise I end up "writing" the melody rather than actually improvising which defeats the point, but I am not yet confident enough to know that what I'm improvising fits my chords etc etc!!) Although whether those functions would work for what I want them to in reality remains to be seen!
I also want to play with the conducting function, where you can tap along to your piece to get more of a "live" feel to the playback...can think of several things I'm involved in where this would be useful...and it sounds like fun to play with

Also, the new classroom features look very promising, although I know that's not relevant for every user!!
I might download the trial and play with that for a bit before I think about upgrading though...