This obviously caused a lot of excitement at the time but I've not heard very much since (except about the Barcelona mayor's dispute with AirBnB). I was (and still am) pretty skeptical of the whole thing but have literally heard nothing, good or bad, since and was just wondering whether people had heard anything from the cities which elected mayors from the social movements, what the social movements in those cities were up to now and how they relate to their new radical mayors.
Some articles from last year:
6 Reasons to Care about the Spanish Municipal Elections
Spain’s democratic spring: how the movements stood for mayor – and won
I read that the metro workers' union went on strike against the Barcelona major in February.