I took my instrument written this past Saturday. I didn't recognize any of the questions from exams4pilots.org, but they all referred to the same book of ancient diagrams and chart excerpts. No questions on the really outdated stuff like MLS. I think there was one question on GPS approaches but it was unrelated to the new WAAS approaches. I studied, but not too hard - I had read the instrument flying handbook, instrument procedures handbook and browsed the relevant sections of the AIM. Passed with 87%. Interestingly, the questions I got wrong were not the ones I was unsure of! I still kind of think that I had at least some of them right.
It's possible that different testing centers are not updating their question banks simultaneously.