If we would not have shipped new features and still did just just version control GitLab the company would not be viable. We're committed to shipping a single application for the whole DevOps lifecycle this year https://about.gitlab.com/2017/10/11/from-dev-to-devops/
But there are multiple performance tweaks en bugfixes going out every month, including this one.
The big performance tweak in this release is the merge request view refactor https://about.gitlab.com/2018/07/22/gitlab-11-1-released/#me... which makes loading merge requests much faster but there are 35 other performance improvements https://gitlab.com/groups/gitlab-org/-/merge_requests?scope=...
There were 141 bugs closed in this release https://gitlab.com/groups/gitlab-org/-/issues?scope=all&utf8...