Update, well yeah I was there! Spent 2 days at Skywalker Ranch and Skywalker Sound.
Saw the archives, both areas. Looked over all kinds of stuff, the ark, DS model, super star destroyer, etc, etc. More blasters than you can shake a stick at. HIC, ion cannon, paintings galore, you name it..
The coolest for me was all the jackets from the Indy movies, the countless tux's from TOD, etc. Also saw something new on Luke's X-wing pilot that we never noticed...
Ben Burtt was our archive host and tour guide. Spent most of the time in his studio. Mission was a success and Ben was very happy!
We also were in situ for the sound re-mixing of ROTLA for blu-ray. Hey, it was just announced also!

Imagine that!
Indiana Jones whips onto Blu-ray later this year
Some close friends shared in some spectacular stuff we were able to witness...