While I'm pretty sure that there will be voice actors performing double duty, I highly doubt that they would give the same voice actor to two important characters like Xander and Ryoma, so the only thing I'm certain is that Matthew Mercer is voicing one of turnĂª, and is most likely Ryoma, due to a certain Tweet,
Also I'm not so sure if it is that is Yuri voicing Tsukuyomi, because of the E3 trailer, I mean, sure, all we heard from Tsukuyomi was one grunt, but that did not sound like Yuri.
And this is just a guess, but I believe that Karen Strassman is the one voicing Hana.
EDIT:Ninja'd on the Matthew Mercer and Tsukuyomi thing.