It’s quite possible but Republic historically doesn’t announce release of new phones in advance. When they’re ready to do so, I suggest keeping an eye on Republic’s official blog here: http://pwk.republicwireless.com.
Additionally, you might find information on Republic’s social media pages. Links follow.
Bottom line, for me, 7/25 is sufficiently close, I’d probably wait and see unless I had an urgent need to upgrade before then. Please understand that’s my personal inclination and in no way based on any inside information as I have none.
Totally understand! Republic doesn’t comment on which phones they are currently in the process of adding. However, considering Republic’s passed relationship with Motorola, it’s likely we will see the new Moto X supported. I hope that helps!