To my understanding I'm not aware of any efforts to bring harmattan to N900 in it's current N950/N9 form, so I guess there's no change there.
As for the N900CE (REAL Meego) builds, I can only hope that we'll see the 1.3 release before it all ends.
Given that Intel has been fairly specific about Tizen targetting Intel chipsets, I would think that all Arm ports of Meego may not have much of a future, so for those interested, now might be a good time to start downloading the non-oss components from the repo.
Don't assume that Meego was the distraction that caused all the grief for Nokia. Nokia's decision to completely rewrite for Qt was the major hurdle for the quick and smooth progression of Fremantle to Harmattan, not their involvement with Meego.