Erm, you're off by a process node. Haswell is produced at 22nm, not 28nm, and its due for public release in 2013. However, Ivy Bridge is also produced on 22nm and that's the one that will be coming out in a few months.
That's still a half node[1] ahead, but this is mostly a matter of Intel in specific rather than CPU manufacturers in general being fast to adopt more advanced process nodes.
[1]http://en.wikipedia.org/wiki/Half-node#Half-shrink