anarchism.space upgraded to Mastodon 2.9 earlier this month (sorry for the lack of public notice)
This release's main change is the single-column mode by default for the web UI. The multiple column UI is still available in your settings.
Full release note here: https://github.com/tootsuite/mastodon/releases/tag/v2.9.0
Also done earlier this month is the block of gab.com as well as gab.ai and develop.gab.com (far-right instance)
concerning blocked instances, there is now a list of all blocked instances here:
@K @announce no, people should be able to make decisions about who and what they're associated with. people should not be subjected to needless abuse from bad faith actors. we are not free speech extremists. there are instances for that.