At this point, it's pretty safe to say that Cataclysm will be released in December.
In the past, expansion releases have largely been a race to max level in order to start raiding and PvP. Leveling was seen largely as a way to get an advantage over your opponents. But with the holidays so close to the expected release date, I'm personally hoping that Blizzard will delay Cataclysm raiding.
I wrote a longer thing on
my blog, but it basically all boils down to setting a level playing field. Rather than making raiding a leveling contest, it becomes more about your raiding ability. Individual players can level at their own pace and enjoy the content. It would also give people time to level alts through the Cataclsym-torn continent.
What do you guys think?