According to information on Ertl's dealer website, Ertl has exlusive rights to manufacture replicas for the 50th Anniversary celebration. They are scheduled to produce the following, to be released this fall (August through November).
2003 Corvette pace car
2003 Corvette coupe in red and black
2003 Corvette coupe, anniversary red, with gold display base, Corvette tool box, and fender cover
Here's a pic of the anniversary red car with the accessories, from Ertl's website:
Here's the full release list from Ertl's website
Hobby exclusives with gold stand, toolbox, and fender cover:
1984 Corvette - Black (October)
1968 Corvette Coupe - International Blue (September)
2003 Corvette - Anniversary Red (September)
1963 Corvette - Riverside Red (August)
1953 Corvette - White w/Black Top (Released)
Open market diecasts:
1961 Corvette Hardtop - Jewel Blue (October)
1968 Corvette Coupe - Safari Yellow (October)
1954 Corvette - Pennant Blue (September)
1984 Corvette - Bright Red (September)
1963 Corvette Coupe - Tuxedo black (August)
2003 Corvette Coupe - Red (August)
1953 Corvette - Polo White (Released)
1962 Corvette Convertible - Sateen Silver (Released)
There are also 1/18 scale "activity kits" for the 1953 and 2003 Corvettes. They are listed as a July release.
-- Marc