Hi timv, Bitbucket engineer here. I'm not on the PM team, but to my knowledge we have no plans to discontinue Hg support. The Bitbucket repo population is roughly 90% Git and 10% Mercurial, but due to our scale that is still a freaking huge number of Hg repos. We also hired one of the core Mercurial contributors last year to ensure we continue to improve our offering for both DVCSs. Of course I can't personally guarantee anything, but if I were an Hg user, I'd feel pretty confident that Bitbucket's support isn't going anywhere in the foreseeable future.