Personally, I find patch 1.10 to be one of the most memorable patches of classic WoW. It was a
patch dedicated almost exclusively to giving nonraiding players more content, access to better gear (without trivializing raids), and generally making the world a prettier place. Patch 1.10 was the patch that implemented weather, as its Storms of Azeroth title implies.
More than that, patch 1.10 taught non-programmers everywhere how version numbering works. "Patch one-point-ten? You can't do that! Shouldn't it be patch 2.0 after 1.9? Isn't 1.10 the same as 1.1?" Nope, sorry! Version numbering doesn't work that way! These aren't decimals, folks. The .10 does not represent a fraction of a whole; it's part of a versioning scheme set up like so:
expansion.major.minor.buildPatch 1.10 indicates that this is the first retail software release and it is in its 10th major revision. While I'm writing this, World of Warcraft version 184.108.40.20634 is on the PTR. Build 14534 of the second minor revision of the second major revision of the fourth expansion/retail release. These aren't decimals, and this isn't math. Patch 1.10 is neither patch 1.1 nor patch 2.0. Got it? Good!
Now on with the show.