Red Bull junior drivers Carlos Sainz Jr and Daniil Kvyat will move into GP3 this season with MW Arden.
Sainz, son of rally legend Carlos Sainz, spent last year in Formula 3 after winning the 2011 Formula Renault NEC title.
The 18-year-old Spaniard finished fifth in the FIA European series and sixth in British F3.
Russian driver Kvyat, 18, had been a FRenault frontrunner for the past two seasons, claiming last year's ALPS title and finished second to Stoffel Vandoorne - now a Formula Renault 3.5 driver - in the Eurocup.
He was also quick in winter GP3 testing for Arden.
MW Arden ran Mitch Evans to last year's GP3 title and finished second in the teams' standings.
Sainz and Kvyat join British F3 champion Jack Harvey, who has signed for the ART-run Lotus squad, as early favourites for this season's GP3 crown.