Cambridge (outside Boston where I live) had rent control but got rid of it around 10 years ago. I don't think its coming back.

I work outside the city core, they seem to building a ton of rental complexes in Watertown. Probably because the permitting is easier.

I'm a relatively new transplant to the city (3 years) and didn't even realize there was a time when the city was rent controlled. My cursory sleuthing indicates it was voted out narrowly in 1994.