If you're an AddOn author make sure to check out the changes with 100035 in this thread sirinsidiator created.
Increased the number of characters that can be used for the “Guild Message of the Day” and “About Us” to 2048 characters (up from 1024 and 255 respectively).
Fixed an issue where some components of the guild history (bank deposits/withdrawals, new member joining, trades, etc.) were not being properly displayed.
Updated some Collectibles' acquire hints to conform to capitalizations standards.
Fixed an issue where Activity Finder queues could give misleading error messages when the queues are at capacity.
Removed the “Load Out of Date Addons” check box in order to fix the issue where it would uncheck itself after every new update. Now, if you have out of date addons and a new update comes out, you'll simply receive a notification.
Note this means you can no longer blanket disable all out of date addons with one global setting.
If you have older addons that were previously disabled by the checkbox, they may be enabled when you first log in and could potentially lead to various UI errors if they are broken/out of date. Please make sure to disable any broken addons and reach out to the addon developer to get an up-to-date version.
Fixed an addon compatibility error found with ConvertToSkillLineId.
Fixed a UI error that could occur when scrolling through menus.
Fixed a UI error that could appear when staring an ESO Plus Free Trial.
Fixed an issue where attempting to redeem a code in-game could erroneously bring up the chat window when attempting to enter the code in with a keyboard.
Fixed an issue where you unable to select Antiquity Fragments marked as new in the Antiquity Codex.
Fixed an issue where Shadow Cloak healing Combat Text wouldn't display.
Help & Tutorials
Corrected some help menu text to state larger groups of 12 players, rather than 24.
Clarified how to gain access to previous Chapters within their individual Help screens.