It's funny... the "memogate" name was hoovered up for the attack on CBS, when it really should have applied to this memo, which shows that the decision to go into Iraq happened in 2002, and that "the intelligence and facts were being fixed around the policy."
James Wolcott called it "devestating" and Media Matters has complained about how incredibly little attention its getting from the media. I imagine that most people believe that it's because they don't want to ruffle Administration feathers. Personally, I have a different take, which is that it's not being reported because, well, it's not really seen as news.
After all, at this point, pretty much everybody who is knowledgable and honest about the whole thing knows that Bush made the decision in early 2002. They also know that the Bush administration will rearrange their interpretation of reality for conveniences' sake. The majority of the American people know it (and the minority still probably believe Iraq was tied with 9/11), the media knows it, the Dems know it, the Repubs know it, and certainly everybody outside the United States knows it. It's just that nobody speaks up about it, because it's "ancient history" and the same old talking points will get trotted out on Fox.
(Of course, conservative media will gnaw away at anything indefinitely if it will benefit the cause, but the SCLM ain't that.)
This is, of course, exactly what the administration was shooting for. Hold off long enough that the media's quest for novelty pushes it on. It worked! Fancy that.