At least five multi-car teams are scheduled to announce their driver line-ups for the 48th running of the Rolex 24 at Daytona during this week's Roar Before The Rolex 24 test at the famous Florida circuit.

TELMEX/Target Chip Ganassi Racing with Felix Sabates is scheduled to announce its star-studded line-up alongside new engine partner BMW, while Dempsey Racing will unveil its line-up and affiliation with Seattle Children's Hospital. Michael Shank Racing, Supercar Life Racing and Stevenson Motorsports are also expected to reveal their driver rosters, although MSR has already announced that it will adopt part of the AIM Autosport crew for the big race.

Other scheduled announcements include Rolex 24 Driver Challenge presented by Sunoco winner Derek Johnston's team for the Rolex 24 and a SPEEDCOM Communications programme to benefit Camp Boggy Creek.

Early entries were filed for eleven Daytona Prototypes and 26 GT cars, with defending Rolex 24 winner Brumos Racing, 2009 Daytona Prototype champion GAINSCO/Bob Stallings Racing, SunTrust Racing, Krohn Racing, Doran Racing, Spirit of Daytona Racing and the new Action Express Racing all fielding Daytona Prototypes alongside . Joining the aforementioned teams.

A five-Porsche GT3 entry by TRG, the defending Rolex 24 GT winners, swells the number of Porsches entered in the test to twelve. TRG, 1-2 finishers in the class in the 2009 Rolex 24, will co-enter two of its cars with Flying Lizard Motorsports and Guardian Angel. Orbit Racing, Alex Job Racing, JLowe Racing, Miller Barrett Racing, Magnus Racing, Bullet Racing and Matt Connolly Motorsports also entered Porsches. Seven Mazdas are entered, including two cars each from SpeedSource, Dempsey Racing and Team Sahlen, plus a single car from Racers Edge Motorsports. Matt Connolly Motorsports has also entered a Pontiac GTO.

Stevenson Motorsports entered a pair of Camaros as it joins the two-car ranks in 2010, while Rolex Series newcomer Godstone Ranch Motorsports/Team MBR entered a Corvette. Long-time Continental Tire Challenge participant Turner Motorsport will make its Rolex Series debut at the Rolex 24, and will join Corsa Team PR1 running BMW M6s.