There is about a week left before Drupal 8.2 goes into beta! That means we will switch to figuring out any issues with changes in the new version instead of making new changes. For core development that means new features and API additions will move up to 8.3. I asked initiative leaders of both proposed and active initiatives for key things that could use help in the remaining time.
API-first initiative
Allowing user registrations via the REST API only needs some more tests for which examples can be found elsewhere in core. Also, although it may sound a bit scary, REST requests without X-CSRF-Token header: unhelpful response significantly hinders DX, should receive a 401 response is actually a nice approachable novice issue to get involved with.
Ongoing, check out the proposed initiative roadmap and attend the API-first meetings every third Monday of every month 5pm GMT at in Google Hangouts.
Media initiative
An amazing feature is in the works to Improve the UX of Quick Editing images and could use some frontend reviews. Help is also welcome to get HTML 5 video and audio playback functionality directly from file field formatters as well as to get camera capture functionality on image fields.
Larger media management goals in core are still to be defined. The team is meeting on that on July 27th. Follow @DrupalMedia on Twitter. Public meeting times are 2pm UTC every Wednesday on #drupal-media on IRC.
Migrate initiative
Help on any of the issues tagged Migrate critical are welcome, especially Refactoring EntityFile to use process plugins instead which blocks several other issues.
Ongoing, check out the list of issues categorized in migrate's master spreadsheet, and follow @MigrateDrupal on Twitter. Public meeting times are alternating 1pm GMT Thursday and 1am GMT Friday every other week on Google Hangouts.
Workflow initiative
Content moderation module is proposed for core based on the existing improvements achieved by the initiative to expand revision handling for content. Helping with unblocking that issue is very welcome.
Other top issues are Allow removing a module's content entities prior to module uninstallation, Add archived base field to revisionable entities, and Upgrade path between revisionable / non-revisionable entities.
Ongoing, check out the high-level roadmap at https://www.drupal.org/node/2721129, and follow @drupaldeploy on Twitter. Public meeting times to be defined.
For a complete list of meeting times and places (links to Google Hangouts where needed), see the Drupal 8 core calendar.