tglal is in the midst of talking with Sailfish/Jolla to see if they'd be interested in supporting Wazapp/Yowsup etc*, he's also going to try Nokia once more of course.
Even if there's never any official support, because much of it's F/OSS it should be do-able, perhaps most of the same team will be interested in continuing that work, remains to be seen.
Oh, & we don't "KNOW that Sailfish can be used on the N9"...
But the way things are being set-up, it may be relatively (see the emphasis) easy for the "community" (not mostly/exclusively Jolla) to devise a fully polished port for the N9.
Anyway all this is a digression, carry-on Wazappers.....

*that could take MANY different forms....