patch 2.3, many of the previously ho-hum mid-level dungeon drops are set to actually become useful, worth the trip you make to go get them in the dungeon (in most cases). Overall, this is a blessing for players everywhere, either starting out with their first characters, or leveling up long-forgotten alts.
Twinks, however, are going to become a much greater nuisance than they were before. Some of their old items are going to be upgraded by default as the new patch comes in and the old items all around the world get replaced with the new.
New twinks, however, will have the privilege of setting their sights on the best of the best items for their particular class and level bracket, putting an even further distance between them and other players who just want to enjoy a bit of PvP as they level up. This is particularly true with new low-level epics such as the Deadman's Hand which, at level 29, seems designed to be the pet dream of twinks everywhere, regardless of race or class.
Does Blizzard intend to support twinking? And what's the whole point of twinking anyway?