The pair will join the Weatherfield serial in September as part of a surprise new plot for their father's character Ken Barlow.
In the build-up to Coronation Street's 50th anniversary celebrations, Ken uncovers a dark family secret when a letter from the 1960s is unearthed during building work.
Although it is understood that Ken's discovery sparks Linus and James's arrival on screen, show bosses are keeping tight-lipped about the identity of their characters.
Speaking of the twist, Bill Roache commented: "I can think of no better way to celebrate my 50th anniversary on Coronation Street than to be working alongside both of my sons - I am looking forward to it immensely."
Linus has already appeared on Coronation Street before, having played Ken's son Peter briefly in the 1970s. He has since starred in NBC's Law and Order, 2005 movie Batman Begins and the Robert F. Kennedy biographical drama RFK.
James, meanwhile, has appeared in ITV1's Cold Blood and BBC One's The Innocence Project.
The duo will appear on screen for three weeks following their arrival in September.