Stefano Coletti will remain in GP2 for a fourth season after switching to Racing Engineering for 2014.
Nathanael Berthon will remain in GP2 for a third season in 2014 with the Lazarus team.
Adrian Quaife-Hobbs will remain in GP2 for 2014, moving to Rapax for his second year in the series.
Johnny Cecotto Jr will switch from Arden to Trident for the 2014 GP2 championship.
Felipe Nasr expects to dovetail a title assault in GP2 with his duties as Williams's test and reserve driver in Formula 1 in 2014.
Mitch Evans will move to GP2 champion team Russian Time for 2014, with iSport management coming back into the series to run the squad.
Ferrari protege and 2013 Formula 3 European champion Raffaele Marciello has been confirmed with Racing Engineering for GP2 this season.
Auto GP runner-up Kimiya Sato will switch to GP2 for the 2014 season after securing a drive with the Campos Racing team.
GP2 organisers have announced rule changes that they hope will make the racing more exciting during the 2014 season.
Russian Time team boss Igor Mazepa has died suddenly at the age of 40.
Stoffel Vandoorne will become McLaren's Formula 1 reserve driver in 2014 and race in GP2 with ART.
Ferrari protege Raffaele Marciello will graduate from Formula 3 to GP2 in 2014, the Scuderia has announced.
Julian Leal will join the Carlin team for the 2014 GP2 season.
Arthur Pic has become the first driver to be signed for the Campos Racing team for its return to the GP2 series this year.
GP2 racer Rene Binder has targeted a "big step forward" in 2014 after signing for Arden International for this season's series.
Jolyon Palmer will switch to the DAMS team for a shot at the 2014 GP2 title.