Sequoia 15.5 not available via Software Update?

Hi,

Running 2014 MacMini, OCLP 2.3.2, and Sequoia 15.4.1. Been running, and updating fine for months.

Yesterday, the 15.5 patch was available for download via Software Update.

Today - I thought I'd go ahead and do it. Weirdly, Software Update now says "Your Mac is up to date (macOS Sequoia 15.4.1)", with no option of downloading and installing the new update.

Anyone else seen this? I wonder what is going on...

Author: @arcjive