The answer to that interesting question is, "yes" and "no." Re-issued books are definitely dated, but are they outdated? I think, the person who asked this question really meant, "Are books originally published years ago and then released again, outdated?" The answer to that would have to be, no.
All of which does not mean that "Gone With The Wind" and Jane Austin should be consigned to time capsules and buried beneath the ground to be resurrected and laughed at by generations born five hundred years from now. There is something to be said for the classics of yesterday. Pair them with a lonely rainy night, a glass of good red wine or a pot of tea, a bit of buttery shortbread, a blazing fire and a hint of heartbreak and you have all the makings of my idea of what heaven has in store for us.
Are all re-issued books of the caliber of Wuthering Heights? Maybe not. But in this competitive world of publishing where it is easier to win the lottery than to be published by a reputable publishing house, the re-issuing of a previously published novel is a feather in its author's cap.