Interlagos looks set for a major revamp for 2012 as part of safety improvements being made in the wake of fatal accidents earlier this year.
Track officials have been pondering re-designing the run out of the last corner, as well as the pit lane entry, after two drivers were killed in separate stock car accidents at the track.
Paulo Kunze and Gustavo Sondermann both died in April after crashes on the long start-finish straight, which is narrow and has small run-off areas considering its high speed. At the time, it was hoped that improvements would be made in time for this year's Brazilian Grand Prix, but it now looks likely that major modifications will come for next year instead.
FIA race director Charlie Whiting said: "There are a couple of minor changes to the circuit [for this weekend] but next year there could be something much bigger: we're hoping to build a new pit entry and a larger run-off around the last corner, but this is a big job as it will require removing a couple of permanent grandstands.
"We've had assurances from the city of Sao Paulo that they'll support this project."