Starting in 2020 Week 20 (Late May), you can suggest an edit when leaving an inline comment in Differential. This feature makes it much easier to get syntax errors and untested code into production quickly.
Starting in 2020 Week 19 (Mid May), inline comments on revisions may now be associated with a character range within a line (or across several lines), rather than just a set of lines.
Phabricator has supported reviewing Jupyter notebook diffs for some time. The feature isn't perfect, but it's a lot better than trying to review raw JSON.
Administrators can now configure global default settings. Prose diffs have improved.
Differential works with any repository, self hosted, or hosted elsewhere.
Some early prototype High Availability features are now available for ambitious installs.
We've begun rolling out some design updates to detail pages in multiple applications.
Almanac moved toward release.
Workboards got even fancier, and repository callsigns are now optional.
Workboards got fancier.
Subprojects and milestones are now available in the UI, but still rough.
We've added an autocomplete feature to comments to make it easier to type usernames and project hashtags. Projects now have configurable menus and simpler rules around watching and subscribing.
Repositories now have unique (optional) short names, Amazon S3 integration has been updated.
We're much closer to making callsigns optional on repositories; subprojects and milestones are creeping forward.
Subprojects and milestones have moved forward, but the UI is still unpolished and confusing.
ApplicationEditor has promoted to stable, search/indexing updates have landed, bin/lipsum got a little fancier, and subproject infrastructure is taking shape.
ApplicationEditor is now largely stable and new third-generation Conduit endpoints have taken shape. Subprojects are up next.
Casual posts about Phacility engineering to supplement the Changelog.