From https://github.com/jenkinsci/testlink-plugin/pull/5

With this feature users will be able to filter test cases by the last execution status.

This way, if your build is failing too often, you may limit the test execution to only automated test cases with "Failed" as last execution (in order to fix the broken tests first and avoid losing time running the other tests).

Thanks @dlad for that. Planned for 3.4