Well, maybe not a total abdication, but Jimbo has relinquished a substantial portions of his powers. See his announcement and the context.
In an upcoming academic article I discuss why calling Wikipedia a monarchy/dictatorship, while not too off the mark in its very early stages, is no longer true. It's nice not to be contradicted by the current events :)
A turning point for digital commons in Europe: the creation of EDIC Digital
Commons
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A unique consortium to build an open, sovereign, and collaborative European
digital ecosystem From the French Presidency of the EU to the European
ambition...
11 hours ago