I've just seen what everyone else has at this point, but I've been checking planetdestiny, Twitter, and reddit all day to see if anything comes through. The weekly update is tonight, and I'm expecting it to be a big one. They have a lot of stuff to address, even without the talk of exotic upgrades.
My concern with that commendation thing is that I got to Vanguard and Crucible rank 3, and then started doing a faction. Some people seem to think you'll get some commendations for the ranks you've already obtained, but what about people who are doing a faction? Even if I don't get retro commendations, should I just abandon my faction? There's no point in leveling it up if I can't get the commendations from it.
Exotic upgrades bother me less now that it's been said you'll start them at 300 damage. I thought they were going to be completely reset and you'd start at 230 or whatever it is. And like ugly pete said, people are flipping that their current legendaries will be worthless, but they won't be. Their max damage of 300 means they're still effective against level 30 enemies. You're going to need better stuff for the hard raid, but that's not opening until January, and there's plenty of time to get new stuff.