Update 2, February 2, 2026 10:10am PT: Apple has released iOS 16.7.14.
Update: As noted by Aaron Perris, Apple has started signing iOS 12.5.8, iOS 15.8.6, and iOS 18.7.4 again. iOS 16.7.13, however, remains unavailable.
Original story (published January 28, 4:19am PT below):
Apple this week released an array of iOS updates, including iOS 26.2.1, iOS 18.7.4, and more.
Now, however, it appears that Apple has pulled some of these new updates due to problems with network connectivity in Australia.