Maybe not full devo-max (however you define it) but they're going to have to deliver something substantial. They made the promise, wisely or no. And already the SNP and Yes vote talking heads are regurgitating talking points left and right about how this result is "a mandate for change", "a call for no more politics as usual", "a No vote doesn't mean no change" etc etc etc. They lost rather decisively, and yet to hear them talk, they sorta won.
Well, a month ago Salmond would have sold his grandma for 45% of the vote. Of course in light of the recent polls it looks like a decisive "no" vote.