User blog comment:Brandon Rhea/New Page and Article Headers: Official Release Date/@comment-25247620-20170613134422/@comment-20644-20170613144036

Wiki Activity isn't a tool that logged out readers utilize, since it's mainly a tool for logged in editors, so we moved it to the right. That way, the most important links for all visitors can be on the left. Logged in editors can access Wiki Activity using the button TK-999 referenced, in the Explore menu, and&mdash;if they so choose&mdash;on their toolbar.