nna2 :
Q4 2011 is when ivy bridge comes out, intels new and improved erm... lower end chip, its going to consist of 22nm transistors
its not out yet
and just encase you dont know what q4 is, its the last quarter of the year (september october november december)
actually that's been pushed to q2 2012 (think April)
http://www.tomshardware.com/news/intel-ivy-bridge-22nm-cpu-3d-transistor,14093.html
and I think lower end is kind of a misnomer... these are not Celerons or anything, but neither are they "enthusiast" ships (those would be the recently release Sandy Bridge - E chips). They are essentially the next progression from Sandy Bridge... that is to say they will be better than sandy bridge, but priced approximately the same, but they won't be as powerful as the SB-E which is priced WAY above these.
And Intel's current release schedule (attempted anyways) is to have a new chip out each year... the next chip (Ivy Bridge) is scheduled to be a die shrink, which will bring power consumption down and increase efficiency is called a "Tick" and the current chip (Sandy Bridge) is a new micro architecture using the previous manufacturing process (read die shrink) and is called a "Tock."
The tock is where the new features and bigger increase in power will come where the tick is more of a minor change, but the die shrink inherently increases performance and efficiency...