The present day status quo of the GL books remained largely untouched (plus-or-minus a few things), yeah. Benefits of being Geoff Johns, I guess.
Under the hood, besides the previously mentioned retcons to John and Guy's origins (and who know if those have stuck), there were probably a big pile of retcons to GL history that would have been necessary to make the revised timeline "work" (mostly arcane stuff about various crossover events that got wiped out) but they were wisely never mentioned, so, yay.
And now that most of the post-Crisis DCU has been shoveled back into continuity, it doesn't matter anyway