Hi everyone,
In the latest store release, we have fixed an issue that prevented the store from generating deltas to previously released revisions. Now, for example, if you released r10 to stable, found an issue, and re-released r9 to stable, the store will correctly generate a delta from r10 -> r9.
Additionally we will now generate deltas against up to five releases in the past week in the same channel to cover the case where publishers release multiple updates in quick succession, and clients upgrade over multiple revisions.