I also feel the need to remind people that Pixelfed Groups are an opt-in feature, you will never see group posts on the main timelines (home, network)

Groups will have their own separate feed, and notifications too!

While Groups will support text-only posts, outside of Groups, the existing photo/video attachment requirements for top level posts apply.

Pixelfed remains focused on photo and video sharing, groups just extends this to support other mediums without an account on another platform