See also 

TeamCity 2018.2 Release Notes
TeamCity 2018.2.1 (build 61078) Release Notes
TeamCity 2018.2.2 (build 61245) Release Notes
TeamCity 2018.2.3 (build 61544) Release Notes

Feature

Usability Problem

Bug

Performance Problem

Security Problem

3 security problems have been fixed.

Cosmetics