Many of the presentations from the 2013 Association of Test Publishers conference are now available and I strongly recommend checking them out. Strong themes include gamification, global assessment, item development, and test security, just to name a few.
I found the one from HumRRO on creating a virtual role-play fascinating. If you haven't already seen it, I strongly recommend you check out their demo at www.humrro.org/simdemo.html. The username and password are both humrrodemo. A small taste of what's possible in assessment!