Funimation has revealed their list of voice actors for the English dub of Tales of Zestiria the X, which will premiere on August 3, 2016, 8:30PM Eastern Time via Funimation's Funimation Now service.
The following is the list of voice actors for Tales of Zestiria the X, headed by voice directors Tyler Walker and Christian LaMonte:
- Sorey - Robbie Daymond
- Mikleo - Philip Lamont
- Alisha - Alexis Tipton
- Rose - Caitlin Glass
- Zaveid - Ian Sinclair
- Dezel - Chris Niosi
- Symonne - Christine Marie Cabanos
- Bartlow - T. Alexrod
- Lailah - Carrie Keranen
- Edna - Kira Buckland
- Lunarre - Austin Tindle
From the list, I did a quick check and it seems all the previous Tales of Zestiria English cast are reprising their roles, with the exception of Mikleo, who was voiced my Michael Johnston in the game. I can't speak for the voice actors of Bartlow and Lunarre though, as their game voice actors weren't made public. I heard Lunarre in the game was voiced by Ben Diskin, but I couldn't find a concrete source apart from fans saying he sounds like Ben Diskin.
Funimation's article is a bit misleading since, quoting them, "many of the original voice actors from the game will be reprising their roles for the English Broadcast Dub," meaning not all of them will reprise their roles, but majority will. However, immediately after the line above, they mention this: "Wanna know who’s coming back for the anime version? Check out the list below!" which, if I understand correctly, means that all those listed in their full list are from the game. I'm not entirely sure what they mean at this point. *shrugs*
A quick Google search on "Philip Lamont" will not lead you to any voice actor. Fans are currently speculating that Philip Lamont may just be an alias that Michael Johnston is currently using for this project, as "Philip Lamont" is a character from upcoming movie The Exorcist. As to why they arrived at that conclusion, I'm not entirely sure.
So, it's either Michael Johnston or it's not Michael Johnston, but actually someone named Philip Lamont. Maybe we'll find out once episode #01 (2nd episode) reels in.
Anyway, the first English dubbed episode will premiere on August 3, 2016, 8:30PM Eastern Time via Funimation's Funimation Now service for those in the US.
The Tales of Zestiria the X anime (read as “the Cross”) is a TV series adaptation of Tales of Zestiria that was first announced during Tales of Festival 2015 as the “Tales of 20th Anniversary Animation”. The animation is done by ufotable. The first season aired during Summer 2016, with a second season confirmed for 2017. Its tagline is “The Journeys of the Shepherd go beyond Zestiria,” and shows hints of connections with Tales of Berseria. 
