Olympic silver medallist Joyce will make his debut for Warren‘s Queensbury Promotions outfit on May 18 at Stevenage FC's Lamex Stadium on the undercard of Billy Joe Saunders’ super-middleweight clash with Shefat Isufi.
The British Boxing Board of Control announced earlier this week that an agreement had been reached for Joyce and Dubois to meet for the vacant British title, with a date of July 13 at the O2 Arena suggested.
Warren is planning a press conference for next week to announce a major event at the Greenwich venue on that date.
Any show on which both fighters featured separately would prove just as popular as part of the build-up towards a future meeting.
Dubois is awaiting the announcement of a new opponent for his date at Wembley Arena on Saturday after Richard Lartey of Ghana was hit by visa problems.
Putney's Joyce, 33, is undefeated in eight contests and recently secured a profile-raising sixth-round stoppage win against Bermane Stiverne, a former challenger for Deontay Wilder’s WBC title.
He has returned from a stint in the USA - where he recorded a first-round stoppage of Joe Hanks in December on the undercard of the Tyson Fury-Deontay Wilder world title fight in Los Angeles - and will now be trained by Adam Booth.
The 21-year-old Dubois, from Greenwich, has racked up 10 straight wins.
Joyce’s new deal means all three leading domestic heavyweights – Joyce, Dubois and Nathan Gorman – will be featured on BT Sport.
Joyce said: “I am now in the right place to accelerate my progress and really make my mark on the UK scene, while continuing to press forward towards world titles.
"Having seen the great job Frank has done with Tyson Fury, I know I’m in the right place. I’m not far away from being in with the top guys in the division and I know Frank is the man to help guide me to becoming a world champion.
"I am really looking forward to featuring alongside Billy Joe Saunders at Stevenage FC for my Queensberry Promotions debut on May 18th."
Promoter Warren added: "In my opinion we now have the three best up-and-coming heavyweights in the world on our books, with a host of fantastic fights there to be made.
"I have always rated Joe and I am delighted to finally get the chance to sign him up.
"Joe has impressed in every fight so far in the professional ranks and is only going to get better as he continues to step up the levels.
“With Joe, Daniel Dubois and Nathan Gorman all moving rapidly in the right direction, the fans can look forward to some massive heavyweight nights in the very near future.”