As of 03/02/2016, we've released a patch for F1 2015. You can find all the patch notes below:
Game
- Added a Strict corner cutting rules option and made the strict rules even stricter than they were previously following community feedback.
- Added support for the Thrustmaster T-150.
- Added support for the SimXperience AccuForce steering wheel.
- Fixed RPM and flag information sent to UDP outgauge devices.
Multiplayer - Fixed an issue where host migration wouldn't work a session lobby.
- Fixed an issue where the host would be unable to see a client’s car after they selected the “return to garage” option.
- Fixed an issue where a session would fail to start if multiple players joined simultaneously.
- Fixed an issue where a player could be prevented from leaving their garage after another player selected the “return to garage” option.
- Fixed an issue where players could not change their tyres on the grid after completing an earlier OSQ session on the same track.
Sports Updates Part 2 - Updated the car model / livery for Mercedes, Ferrari, Williams, Force India, McLaren, Lotus and Manor.