Both players were concussed in the 42-37 defeat by Australia in the second match of the series, ruling them out of Saturday's 29-20 loss to South Africa.
While Curry has completed the graduated return to play protocols, Feyi-Waboso remains unavailable and is not present in the 36-man training squad named by Steve Borthwick.
Curry replaces Charlie Ewels in the group that assembled at England's Surrey training base on Tuesday with Cadan Murley called up as a replacement for Elliot Daly, who is struggling with an unspecified injury.
Apart from the change enforced by Daly's absence and the return of Curry, Borthwick has retained the same players who have been present throughout the autumn.
England must topple Japan to avoid a whitewash this month and even with Australian coach Jones' side ranked 13th in the global standings, Borthwick is likely to make only minor changes to his starting XV when he names his team on Friday.
ENGLAND SQUAD
Forwards: Fin Baxter , Dan Cole, Alex Coles , Luke Cowan-Dickie, Chandler Cunningham-South, Ben Curry, Tom Curry, Theo Dan, Trevor Davison, Alex Dombrandt, Ben Earl, Ellis Genge, Jamie George, Ted Hill, Nick Isiekwe, Maro Itoje, George Martin, Asher Opoku-Fordjour, Will Stuart, Sam Underhill.
Backs: George Ford, Tommy Freeman, George Furbank, Ollie Lawrence, Alex Lozowski, Cadan Murley, Luke Northmore, Harry Randall, Tom Roebuck, Henry Slade, Ollie Sleightholme, Fin Smith, Marcus Smith, Ben Spencer, Freddie Steward, Jack van Poortvliet.
