No It is not yet on the 700 or 900
From what I understand it is only on the 600 for now. If anything, I personally think Genos will get it before the other SX models ....well that's IF it proves ok on the 600, is not problematic and users like it, then it MIGHT be offered in a Firmware update, but I have not heard anything to confirm this.
When the 900 arrived it had Chord Looper and Genos did not, that was then added to Genos on an update ....so maybe history will repeat, who knows??
I would not 'hold your breath' IMHO ....It will be a long wait ...I think the 600 will take a LONG time to even hit the stores and i presume application to other models will be well after that, well if it even happens at all.
Keith