I'm not sure if it was a mass email for everyone but I got a direct email from the Program Coordinator. I was invited for an initial Zoom interview from one UCSB faculty and received an email on December 7th and had that interview on December 11th. Additionally, I was invited for an initial Zoom interview from the other UCSB faculty I applied to and received an email on December 11th and had that interview on December 16th.