Casting for this fall’s Broadway offerings continues to take shape.

Sebastian Arcelus has been tapped for the title role in the new tuner version of “Elf” while Justina Machado and John McMartin are on deck for Lincoln Center Theater’s production of “A Free Man of Color.”

Arcelus, who has had stints in Main Stem musicals including “Jersey Boys” and “Wicked,” is joined by Amy Spanger (“Rock of Ages,” “The Wedding Singer”) as the love interest in “Elf,” based on the 2003 screen comedy about Santa’s oversized helper.

Show has music from the “Wedding Singer” duo of Matthew Sklar and Chad Beguelin, and book by Thomas Meehan (“The Producers”) and Bob Martin (“The Drowsy Chaperone”). It will launch what could become an annual offering — either on Broadway or in the regions — with a limited-engagement world preem produced by Warner Bros. Theater Ventures in association with Unique Features. Casey Nicholaw helms and choreographs a cast that also features George Wendt and Beth Leavel.

Meanwhile, Machado (“Six Feet Under,” “In the Heights”) and veteran legiter McMartin (“Grey Gardens”) come aboard a hefty “Free Man” cast that already includes Jeffrey Wright, Paul Dano and Mos (the performer formerly known as Mos Def).

A new play by John Guare set in New Orleans in 1801, “Free Man” is one of two Broadway openings this fall from LCT. “Free Man” is helmed by George C. Wolfe at the Vivian Beaumont Theater, the Main Stem venue on the Lincoln Center campus, while the new musical version of “Women on the Verge of a Nervous Breakdown” plays the Belasco.

“Elf” opens Nov. 14 at the Al Hirschfeld Theater, with the opening for “Free Man” set for Nov. 18.