Vitaly Petrov is promising news about his future "very soon".
Caterham’s Jarno Trulli last week played down rumours the well-sponsored Russian Petrov, a refugee of the former Renault (now Lotus) team, could be set to replace him.
"Very soon is all I can say," Petrov answered his Twitter followers when asked when official news about his plans for 2012 can be expected.
"My friends, be patient," he added in Russian.
Meanwhile, Finland’s Turun Sanomat said it has not yet been decided if Trulli or his teammate Heikki Kovalainen will give Caterham’s new CT01 car its track debut at Jerez on 7 February.
The newspaper reported rumours that the matter will be resolved with the toss of a coin.
The former Team Lotus’ 2010 and 2011 rivals, Marussia (nee Virgin) and HRT, will not be taking their new cars to the opening test of the pre-season.