Training time when a barrack is under upgrade

Yes. Just as before the update, upgrading a barrack will increase the training time of your troops.

Here's an example (wizards) of their training time depending on the number of barracks available :

• 1 lvl 6 barrack: 2 min training time

• 2 lvl 6 barracks: 1 min training time

• 3 lvl 6 barracks: 40 sec training time

• 4 lvl 6 barracks: 30 sec training time

Note that the training time does not depend on the level of the barrack.

3 lvl 6 barracks + 1 upgrading barracks = 3 available barracks = 40sec training time.

Here's the proof on my own village :