05/24/12 - I do know of a patch in the pc version that moved the Barenziah Stone from a bedroom in the Thalmor Embassy to laying next to an elf inside Reeking Cave (the exit spot from the Thalmor Embassy quest Diplomatic Immunity). Other than that, I haven't noticed a difference between the current game and guide. That is unless you include all the user-created content...so I'm positive that the only(?) updated guides that are in existance are user generated. However, if Bethseda comes out with a large expansion (i.e. Shivering Isles and Knights of the Nine for ES4: Oblivion), then MAYBE a guide will be created. However, this is all speculation from a fellow gamer who has no affiliation with making game guides...other than trying to fix the typos created by user submitted guides ;P

03/30/12 - I’m sorry, I can’t currently comment on that question.