Drupal 8: no more blog in core. Who's next?
A while ago, the blog module was removed from core in Drupal 8 and now lives as a seperate module in contrib. Others candidates are currently being discussed in a thread to make core more maintainable. That thread, in turn, was a result of the smallcore movement. But not every module is going to be demoted to contrib. While modules like poll and dashboard might get demoted to contrib, other like tracker and book have found enough support to stay in core.