According to a post on Cisco Learning Network, Cisco will be releasing the topology used in the TSHOOT exam:

First, I am part of the exam development team. Second, what am about to reveal is not part of some secret NDA.

The new TSHOOT exam requires you to isolate issues on a defined network topology. The purpose of the exam is to evaluate troubleshooting skills, not how quickly you can grasp a network topology you have never seen. To this end, it is Cisco’s intent that the exam network topology be available for review before the candidate attempt the exam.

However, the wheels seem to move slowly and the network topologies have not been posted on CLN. Because of this I have authorized to make the topologies available through this discussion until they are officially posted.