For those as confused as me, I'm on macOS 15.6.1, and it seems for the next version they aligned everything and I do indeed see an update for "macOS Tahoe 26.2". However, I also see a Sequoia 15.7.3 update dated at the same time and together in the same upgrade blog post (and for Sonoma 14.8.3, kudos), so for those that doesn't seem to want to do the jump now into Liquid Glass, that seems available:
https://support.apple.com/en-us/100100
Note: I had to click the [i], then unselect the "macOS Tahoe 26.2" and select the "macOS Sequoia 15.7.3" manually to avoid a full upgrade.