CMT revealed its 2020 Next Women of Country class during its seventh annual showcase at the CMA Theater at the Country Music Hall of Fame on Nov. 12. Martina McBride introduced the 2020 class, which included Abbey Cone, Avenue Beat, Caylee Hammack, Gabby Barrett, Hailey Whitters, Kylie Morgan, Madison Kozak, Renee Blair, Sycamore, Tiera and…