Along with Town Hall 11 will need to be several upgrades to give users an incentive to upgrade. One of these will likely be Barbarian level 8, along with that new defensive troop mentioned above. Earlier this year the max for Archers and Barbs was six, and Supercell changed it to 7.
In a recent official Clash of Clans update video by Galadon, we saw a hint that this is coming. His Barbarians were level 7, but not highlighted with fire around the number. Any maxed troop in the game is labeled with a number, and that number is on fire when they're a maxed out troop. The latest video for the update in September showed a level 7 Barbarian that wasn't maxed out. See the image above. Expect Barbarians level 8, and much more with TH11. In fact, some suggest every single troop will get one higher level with this update. Now that would be huge, but we'll have to wait a few more weeks to find out.
I'm also expecting level 6 Hog Riders, level 3 witches, among other things. Who knows though.