If you prefer to immerse yourself in the Foundry, a whole new suite of assets is coming with the release of Fury of the Feywild, including costumes, encounters, an Elven city interior, maps, objects, and more. The Foundry, however, will be disabled for the first part of the expansion play test.
Other odds and ends of this patch include changing the reset time for daily quests to a standard 6:00 a.m. EDT, new items, and class adjustments along with a fair amount of tweaks and bug fixes. Catch all the details in the full patch notes.
[Thanks to Dengar for the tip!]