For "local" storage as supported by bup and ddar, yes. Generally for external re...

		rlpb on Feb 19, 2015 \| parent \| context \| favorite \| on: Bup – An efficient backup system based on the git ... For "local" storage as supported by bup and ddar, yes. Generally for external remotes: not yet, AFAIK. http://git-annex.branchable.com/design/assistant/deltas/ has some design thoughts, so I think it is planned.