IndyCar rumor mill

Word is that Rahal Letterman Lanigan Racing will make a sponsorship announcement Thursday for the team's 2016 Verizon IndyCar Series entry.

We also hear that on Thursday Dan Andersen and John Doonan will unveil renderings for the new Tatuus USF-17 car that is set to debut in the Cooper Tires USF2000 Championship Powered by Mazda in 2017.

And breaking from tradition of not announcing his driver lineup until the week of the first race of the year, we hear that Dale Coyne will announce on three things on Friday 1) a 2016 sponsorship agreement, 2) the driver of its full-time Verizon IndyCar Series entry and 3) the driver of its one-off entry in the 100th Running of the Indianapolis 500 (thought to be Pippa Mann).