Fair enough – there were definitely changes and fixes post-release that I forgot about.
That said, reading through the patch descriptions, the last one of any significance (assuming you’re playing in English) was March 2021, six months after release. (The last update, in February 2022, improved Steam Deck support, in time for the first shipments.) So assuming a similar cadence, Hades II should be “done” in about six months.
Given the (I assume) vastly larger early access pool, I would bet on fewer patches for Hades II, though.
Huh… I had always assumed that it related to having one and a half feet/legs.