Quietly, Intel has started shipping of Q6600.
http://www.dailytech.com/article.aspx?newsid=5595
I have updated also:
http://forumz.tomshardware.com/hardware/Rumoured-Processor-Roadmap-Intel-AMD-2007-ftopict209632.html
Intel started shipping three new quad-core processors on Friday night. The three quad-core processors include the mainstream Core 2 Quad Q6600 and single processor workstation and server Xeon X3220 and X3210.
http://www.dailytech.com/article.aspx?newsid=5595
I have updated also:
http://forumz.tomshardware.com/hardware/Rumoured-Processor-Roadmap-Intel-AMD-2007-ftopict209632.html