No way, next expansion comes in 2013..
In MoP, they have rushed the content too much already..
Just take a look at ToT, Blizzard promised us a raid that was as epic as Ulduar, instead we got a Bottom 3 raid, which is too linear, too much trash and too boring bosses... The worst boss (Tortos) in the entire game, along with Dark Animus, Elder Counsil, Twins, Primordus (Gollum ripoff) and Iron Qon, makes this instance a total failure.
We need MORE time between patches, but also more content in each patch that takes LONG time (2-3 months is fine) to complete..