DailyTech has published an article on Intel's 2006 desktop CPU roadmap:
Intel's Conroe processor is receiving the most amount of press, is on high expectations with mainstream consumers and enthusiasts alike. Packing two cores, a next-generation architecture, and large amounts of cache, the Conroe family also comes in at significantly less than a Pentium EE. Conroe itself will be using LGA775 and so will the rest of Intel's desktop processors for the remainder of 2006. Expect the official Conroe platform announcement to come at IDF 2006 on March 7, 2006.
Most of Intel's single-core processors have already been announced and released, except for two Pentium parts running at 3.33GHz and 3.GHz, which are both slated for a release on May 28 of this year. Both processors will be sporting larger 512KB L2 caches and cost $117 and $103 respectively.
You can check out their article and graphs over DailyTech