I just found this in the Ike wetsite
#9568.3 Nikon D300s Back Assembly
$800 US Market Suggested Retail
Converts #6812.3 Nikon D300 housing to #6812.31 Nikon D300s Housing. Intended for Nikon D300 users who purchase the D300s as a second camera body.
Includes complete housing back with camera mounting tray, TTL electronics, hotshoe, bulkhead and Super-Eye viewfinder. Partial back assemblies or retrofits of #6812 existing housing backs are not available.
Available for purchase through any Authorized Ikelite Dealer.
Good news for D300 shooters wanting to upgrade
Stephen
