Over the last week or so we’ve had four snapshots, and at this point, it’s looking like the Minecraft 1.13 pre-release will be here any day soon. 18W21A and 18W20A/B/C all mainly address bugs, indicating imminent completion of the snapshot phase.
Aside from a huge list of fixes (see the links above) the main feature added in the releases, is that Dolphins will now help players locate treasure. Players just need to feed Dolphins raw cod and they will swim to the nearest shipwreck or underwater ruins. As far as we can tell, this was the last major (announced) feature that was missing in previous snapshots – so the game should now be feature complete.
It’s anyones guess how much bug squishing needs to be completed before final release, but it does feel we’re now very close!