No, because in Mw2 they can patch glitches and hacks without us having to install the updates/patches. So that means they are going to patch more glitches because they don't have to worry about lodes of people getting angry and annoyed because they keep having to install updates and patches. In CoD4 IW could only patch glitches and hacks by making you install the patches, but with Mw2 they have found a way to patch without making you install, so they will be patching ALOT more glitches. Also, if we find a great hack and IW patch it without making us install the update/patch, we will not be able to bypass to get it back.
Map Monkeys got a hold of these maps, and broke them.
They found all glitches, but I have a feeling that they didn't tell IW
every single one of them, maybe they kept some for when the game is released?
Just a guess..