The film will seek financing at the upcoming Cannes Film Festival.
'Wild Oats' is being produced by Blythe Frank of Wild Pictures and Kip Konwiser of the Konwiser Brothers. Stealth Media Group is executive producing, reported Variety.
Andy Tennant, whose credits include 'Hitch' and 'Sweet Home Alabama', is directing from a script by Claudia Myers and Gary Kanew.
Maclaine portrays a widow and retired history teacher who receives a life insurance check accidentally made out for USD 5 million instead of the expected USD 50,000. Her best friend, portrayed by Lange, urges her to deposit the money and escape their small town life to the Canary Islands.