I think the “it is Fallout” mantra is a lost cause, at this point. The whole project has been plagued by jaded fans since its announcement - some people only want to see an isometric, tactical turn-based game when they hear the word ‘Fallout,’ and those people will be sorely disappointed in two weeks. It will still have Fallout-type humor, feats, and wide-open gameplay, but after that it will be a lot like what Bethesda is famous for.
I never finished Oblivion, but I plan on playing the hell out of Fallout 3, and it’s currently my most-anticipated game of the year. I’m just torn between the 360 version (with which to entertain my family) or the PC version (with the undoubted plethora of free mods).
I’m currently renting Dead Space, since it’s gotten stellar reviews, even though I normally hate horror games. Far Cry 2 will be another rent, but the Half-Life-style immersion in it may be unparalleled, so it may hit the big time, but only if the balance on things like car and gun breakdowns isn’t horribly annoying.
Fable 2 looks like it’ll be one of the best console RPGs available, but, since my money’s between that and Fallout, I don’t think I’ll be into it for awhile yet.