CIPA released updated DSLR sales figures that show greater-than-expected estimated unit growth for 2007 and 2008, and IDC upped their US market digital camera shipment numbers for 2007 (22% unit growth, though very little dollar growth), as well. IDC now ranks Canon as the top seller of all digital cameras in the US with 26% market share, Sony with 18%, Kodak with 12%, and Sanyo suddenly appearing at number 4 with 11%. Nikon's Coolpix lineup continues to weaken, dropping Nikon to single digit overall share for all digital cameras, though DSLR sales are up (see next paragraph). Curiously, Nikon's Coolpix forecast for this fiscal year has just been increased (again), so perhaps there are some breakthrough models about to appear. Even with Nikon's optimistic Coolpix forecast it's unlikely their overall digital camera market share in the US will change much, though.
In Japan Nikon appears to have overtaken Canon as the overall leader in DSLR sales. Several sources point to first-half 2007 sales figures for the Japanese domestic market, with Asahi Shimbun being the most specific: Nikon 47.5%, Canon 36.5% share for the first half of 2007 in Japan. That's almost a complete reversal from two years ago, and appears driven by the success of the D40/D40x (along with continued strength of the D80 and D200). Nikon themselves announced their 40 millionth Nikkor shipped in July 2007. Their lens technology page was updated to reflect this (requires Flash).