OTT releases this week: This week's OTT releases offer a diverse cinematic experience, from horror-comedy "Thamma" and sci-fi spectacle "Tron: Ares" to gripping thrillers like "Dies Irae" and "Stephen." Holiday cheer arrives with "My Secret Santa" and "With Love, Meghan: Holiday Celebration," alongside a festive stand-up special from Matt Rife.