I spent this morning visiting the Boeing plant in Everett and looking around the Future of Flight center. Herewith a few notes and photos, probably of interest only to hard-core aviation geeks. Click the thumbnails for full-sized images.
I got there just after 9, and was scheduled to take the 10:00am plant tour. While waiting, I checked out the exhibits and gift shop:

Before joining the tour, I had to stash my camera, cellphone, Kindle, and other gear into a storage locker. This was expected, but still frustrating: the whole thing is very photogenic! After the obligatory pep talk and orientation film, we took a bus over to the assembly building (the largest building in the world, as we were incessantly reminded). We started at the west end, which normally handles 747 assembly, and which is in transition right now. There was one more or less complete 747-400F in the building. which we were told was the last of the 747-400 production line. (This might be ln 1419 for LoadAir.) Over on the subsection assembly side, there were two nose sections in an early stage of assembly for the first 747-800F aircraft, but that was about it. Since the 747 area is fairly quiet, they were using the space to kit out two of the 787-800 test aircraft. One will eventually go to Japan Air; the other is destined to be the static test airframe.
As we emerged from the tunnel at the west end of the building, a Dreamlifter taxied in and parked. We got back on the bus, and drove up to the east end, where the 777 and 787 assembly takes place. There were six 777s in various stages of completeness, from an Emirates 777-200F (ln 788), with engines and landing gear in place, to a British Airways 777-236 (ln 791) that was still just a collection of fuselage sections. On the 787 side, we could see four aircraft, headed up by an ANA ship with engines fitted and flight test instrumentation in the cabin.
90 minutes after we’d started, we were back in the Future of Flight gift shop, with a CD-ROM of promotional materials in our hands. I retrieved my camera and headed up to the roof area: