Joining Tony winner Easton (Invention of Love) and Tony nominee Ivey (Butley) will be Philip Goodwin (Tartuffe), Roberta Maxwell (Othello) and C. J. Wilson (Festen).
Tony nominee Paxton Whitehead, originally announced to appear in Home, has withdrawn from the production.
Two-time Tony Award winner Joseph Hardy stages David Storey's work that centers on four friends who meet in a park to "converse about life's events only to slowly reveal the reality of their strange circumstances."
Running Aug. 13-24, Home marks the final offering of the Williamstown Theatre Festival's main stage season. Tickets are available by logging on to wtfestival.org or by calling (413) 597-3400.