
The attacker must use at least 1/3 of a full army for their TH level 1. You get a free 16 hour shield at 90% destruction. You get a free 14 hour shield at 60% destruction.
You get a free 12 hour shield at 30% destruction. As such, trophy farming has been massively nerfed. Also, your town hall holds much more loot (1/5 of total).
Shields are no longer awarded on destruction of town hall.
The shield system has been changed in the following ways as part of the update: