Just finished the update to 3.4.7. Sorry it took so long. I honestly expected it to take like 10min of downtime and said 30min on twitter for comfort. Yeah... Took 2hrs to get it all running. That's what happens when there's bugs hiding in places.
IP.Content (the portion which you see comics, front page, follows, groups, chat... everything minus forums & members & donate) actually didn't even get updated. So it was really weird how IP.C was the one that was breaking from the update. I still don't know why it exactly happened. I just know that I stopped using the little thingy that broke entirely. It was previously used to hide the "breadcrumb" which is the thing at the top that goes Batoto Forums > Batoto > Announcement > etc on IP.C pages. Now it's just off. Anyway, I'm guessing people don't really care about the details, I wouldn't care either... though was frustrating to drill down.
On actual reasons to updating. The update actually has very little contents that may be interesting. I mostly did it now for security patch in case I missed anything in the past. Also, bug fixes. Minor bug fixes doesn't get listed separately on IPB's release notes I linked above.