FIA GT Series boss Stephane Ratel has hit his target of achieving more than 20 full-season entires for the new championship.
A minimum of 21 cars due to contest all six races of the series, which takes over from the GT1 World Championship, are on the entry list for the opening round at Nogaro on March 31/April 1.
One further entry is a possibility for the French event, while the grid will be bolstered by five cars competing on a one-off basis.
Ratel said: "Twenty-one or 22 cars is spot on our objective, so I am very pleased. It is an excellent field and we are expecting more cars to sign up for the series from Zolder [round two in April]."
The Novadriver Audi squad, a regular in last year's GT3 European Championship, is working on a second entry that could come to fruition in time for Nogaro, while the ProSpeed Porsche and Reiter Engineering Lamborghini teams are looking to join the series full-time at Zolder.
Of the 21 full-season entries, which include cars from six different marques, 11 will race in the Pro Cup for all-professional driver line-ups.
The grid has been bolstered by several late additions, including two McLaren MP4-12Cs entered by the German Doer Motorsport squad and a solo Mercedes-Benz SLS AMG fielded by Seyffarth Motorsport.
Audi is the strongest manufacturer numerically on the entry list, with five full-time entries split between Vincent Vosse's WRT squad, Phoenix Racing and Novadriver.
There are four cars on the entry from each of BMW, Mercedes and McLaren.
Last year's GT1 World runner-up Vita4One Racing has entered only one BMW for Frank Kechele and Greg Franchi, but the German squad is also running the BMW Sports Trophy Team India entry in conjunction with the Spanish SUNRED squad.
SUNRED will also have an involvement in the BMW Team Brazil, whose drivers include Ricardo Zonta and Caca Bueno.
The HTP Gravity Charouz team, which is running three Mercedes, has GT stalwart Allan Simonsen, 2012 FIA GT3 champion Maximilian Buhk and sometime Auto GP racer Sergei Afanasiev among its drivers.
Sebastien Loeb Racing leads the McLaren attack with a two-car all-pro line-up, with team co-owner Loeb joined by factory driver Alvaro Parente.
There are two Nissans and two Fords on the entry, fielded respectively by Nissan GT Academy Team RJN and Rodrive Competicoes.
Three Ferraris (pictured) and a solo Lamborghini fielded on race-by-race entires add diversity to the Nogaro grid.
Nogaro GT Series entry list: Gravity Charouz Mercedes Maximilian Buhk/Alon Day Gravity Charouz Mercedes Sergei Afanasiev/Allan Simonsen Gravity Charouz Mercedes Jan Stovicek/Petr Charouz Phoenix Audi Enzo Ide/Anthony Kumpen India BMW Armaan Ebrahim/Matteo Cressoni Rodrive Ford Matheus Dall'Agnol Stumpf/Claudio Ricci Rodrive Ford Raijan Mascarello/Felipe Tozzo Loeb McLaren Sebastien Loeb/Alvaro Parente Loeb McLaren Andreas Zuber/Mike Parisy WRT Audi Stephane Ortelli/Laurens Vanthoor WRT Audi Rene Rast/Niki Mayr-Melnhof WRT Audi Frank Stippler/Edward Sandstrom Novadriver Audi Cesar Campanico/Carlos Viera Novadriver Audi TBA/TBA Doer McLaren Niclas Kentenich/Daniel Keilwitz Doer McLaren Paul Green/TBA Sainteloc Audi Gregory Guilvert/TBA Brazil BMW Caca Bueno/Allam Khodair Brazil BMW Ricardo Zonta/Sergio Jimenez Grasser Lamborghini Hari Proczyk/Dominik Baumann Vita4one BMW Frank Kechele/Greg Franchi Seyffarth Mercedes TBA/Jan Seyffarth Auto Sport Ferrari Soheil Ayari/Jean-Luc Beaubelique Auto Sport Ferrari Fabien Barthez/Gerard Tonelli RJN Nissan Mark Shulzhitskiy/Wolfgang Reip RJN Nissan Alex Buncombe/Lucas Ordonez AF Ferrari Filip Salaquarda/Fabio Odini