When project import scope if configured, users with the same username and email are compared based on their email verification. TeamCity will display the conflicts information and the administrator can choose whether to merge the users found.
Agent Limit for Pools
By default, an agent pool can contain an unlimited number of agents. Since TeamCity 10.0, you can set a maximum number of agents in the pool (not applicable for the Default Pool). If the maximum number of agents is reached, TeamСity will not allow adding any new agents to this pool. This includes moving agents from other pools and automatic authorization of cloud agents. New cloud agents will not start if the target pool is full.
REST API enhancements
Bundled Tools updates