According to the deployment schedule [1], our latest and greatest code will be hitting group 0 wikis on a Tuesday. I strongly encourage you to take the time to test a few common and uncommon workflows across the myriad features new and old and report any bugs you uncover before the train starts rolling. You might also want to take a look at a few of the group 0 wikis on Tuesday too while our development environments don't replicate that of production. If you find the time after all of this, then perhaps you could try translating one or two workflows into browser tests (!!!)
[0] https://phabricator.wikimedia.org/T100293
[1] https://wikitech.wikimedia.org/wiki/Deployments/One_week