There has been a great deal of speculation in the past year about a possible fusion wanted in great part by the new-entry BMW. Autosport is reporting that talks are well under way for creating a World Championship of the three series DTM, JGTC and Grand-Am. Currently the JGTC has V8 3,4 litre engines (Honda, Toyota and Nissan).
The DTM has V8 4,0 litre engines (Audi, Mercedes-Benz, BMW). The American Grand-Am series is becoming increasingly a GT rather than DP series. The entry list for the Daytona 24 hour race in late January confirms this trend. Grand-Am recently nominated Gabriel Cadringher former FIA head engineer to establish technical regulations.