See also Jaipur 2018.1 (build 57605) EAP1 Release Notes

Read-Only Node

TeamCity makes a step towards High Availability by introducing a read-only mode for a server. It is currently possible to start a second, read-only TeamCity server looking at the same database and data directory as the main one. 
The read-only server allows users read operations: view the build information, download artifacts, etc. during the downtime of the main server, e.g. during upgrade.

User Interface Changes

We continue updating the interface:

Docker Support

Bundled Amazon S3 Support

TeamCity now comes bundled with Amazon S3 plugin, which allows uploading to, downloading and removing artifacts from S3. Resolution of artifact dependencies as well as clean-up of artifacts is handled by the plugin. The artifacts located externally are displayed in the TeamCity web UI.

Viewing Shared Resources Usage

Starting from this build, if at least one resource lock is defined in a build configuration, you can view the resources used by the build on the Shared Resources tab of the Build Results page. The tab displays the resources and their type, including the locks used by the build for each resource.

Clicking the resource name takes you back to the the shared resources configuration page on the project level.

Other Improvements