How could we find out the answer to that?
By deduction and inference actually. TCL/alcatel are releasing the 4s pro to Europe. They would only do that with a successful product, generally speaking. Sure EU is slightly bigger on windows 10m, but if the product had tanked in the US, there's no way they'd do that.
TCL also made a dtek60 blackdroid phone out of related components. Seems their general strategy atm is to re-use hardware to juice out the hardware design costs into profits. Which is actually pretty smart for a smaller phone company. Push as many units, while minimising investment costs.
I'd expect this refresh will be the same - it will go as the next touch only blackdroid, and the next win10m phone. I mean, if they could also push this phone in Europe - how good would it be for them to be the only affordable upgrade for win10m users around via both the existing 4s pro, and the new model, they'd have the market to themselves (Considering no one else seems to be going for EU right now - wileyfox is british, HP is US). It would be a competitionless field, full of existing win10m users who haven't upgraded partly due to a lack of decent new options