My thoughts on the DJI OM 5 upgrading from the 3

At its heart the OM 5 is not a great leap forward over its recent predecessors, and with the battery life reduction you could even argue that the OM 4 is a better bet for some people (especially given that its price is likely to drop in the wake of the OM 5 launch).

That said, I thinks the portability of the OM 5 will prove a big boon for most people like myself, and the extension rod is a smart inclusion too. DJI has certainly found some ways to improve on the already-excellent OM 4 here. I would personally just keep the OM 4 for now if you have that already unless you have money to burn.