Tis the season for summer performance announcements in the Berkshires and the theatre company bearing the region’s name is right in the mix. WAMC’s Berkshire Bureau Chief Jim Levulis spoke with Kate Maguire, artistic director and CEO of the Berkshire Theatre Group, about its 2015 season. Performances will take place at the Colonial Theatre in Pittsfield along with the Fitzpatrick Main Stage and Unicorn Theatre in nearby Stockbridge.