I can't see anything in the upgrade that is enticing for me to do so, in fact because of the battery issue, quite the opposite.
I don't need uncompressed HDMI output and I haven't encountered any of the 'phenomenons'. I always update to the latest firmware or software for that matter but because of the 'battery phenomenon', (I only have two third party batteries), I'm holding off.
Anyone else in the same boat?
For me the IR-assisted AF is big thing, so I downloaded the FW floating around even before official Canon release.
Well, it's the only one that was playing on my mind in rare jobs it's required for (for me). But till then, I can certainly hold off.