Nikon should announce the Nikon D90 replacement and a new Nikkor 200mm f/2.0 with Nano coating and VRII in mid-September (probably on/around September 15th, 2010). The current Nikkor 200mm f/2G IF-ED AF-S VR version was announced back in 2004 and it now sells for around $5,000. Expect the price of the new version to be close to the $6,000 mark.
This will probably be the second and last Nikon announcement before Photokina 2010. We may have another official announcement by the end of the year (after Photokina - based on previous years, Nikon seems to like the end of November time frame).
If my previous report is correct, this should be the last (8th) lens that will be announced in 2010.
I feel very confident with the above information, but until I receive a confirmation from at least one more source, I will rate this rumor at 80% probability.
I will do another Photokina rumors recap tomorrow, since few new pieces of information came out since the last recap.