Mercedes GP 2010 latest launch date

A more detail launch date had been revealed.
Reported in the german press, Mercedes GP will launch its 2010 contender at the Mercedes-Benz museum in Stuttgart on January 25th.
The car which Rosberg and Schumacher will test is name ‘Mercedes Petronas RB1′. The RB shorts for Ross Brawn initials. It will be tested for the first time [...]