During an employee event yesterday focused around the new attractions coming out, apparently Butterbeer was served for the first time for west coasters! Heard various reviews of it, some liked it, some didn't.
Remember that Butterbeer, per the contract with Warner Bros, can only be served in specially approved events or in the land itself, so don't expect to see a cart arriving on scene anytime soon.
Didn't get much details besides that, I have to assume not much else was revealed besides what we know. The event seemed to be poised to inform employees about the upcoming plans so they can let the guests coming to the park know what's going on with the construction. Since not all USH employees are theme park nuts like us, this is a pretty smart idea.