Well get ready, because
Batman & Robin: Eternal started this week. I've not been reading Grayson, but they've recently brought Dick Grayson back to Gotham (Prior to Endgame, almost everyone bar Bruce Wayne thought he was dead), and the new run of Eternal goes back to a case he worked with as the first Robin. I'll grab this at some point, not in a hurry. Apparently, this will also reintroduce Cassandra Cain back into the main DCU, much like the first Eternal reintroduced Stephanie Brown.
Also, while not Batman, it ties into DKIII so I'm just gonna leave this horror here:

Thank god Frank Miller isn't drawing the whole thing.