Some fans of the franchise are not giving up.
No "November announcement" of Half-Life 3 ever happened. However, there are fans of the franchise who continue to wait for the presentation.
Recently, the Half-Life community's attention was drawn to the announcement of the Rocket Lab rocket launch — Valve boss Gabe Newell had previously collaborated with the company to launch the gnome Chomsky into space.
It was originally scheduled for December 9, but was postponed and now "the launch literally coincides with the end of The Game Awards ceremony."
Those waiting for Half-Life 3 suggest that this is not a coincidence and Valve may be preparing something.