At this stage certainly it has to be a philosophical issue - all at present we can state is that we have no way to predict the future.
I would also say that a "yes" answer raises some serious problems for theology. For the future to be knowable it must be fixed which raises some interesting questions - still more if you consider a creator deity. (Consider - if a creator deity does know the future and acts within the framework of time as we see it, then the creator deity has no choices - everything is inevitable and known to be inevitable, eliminating the whole notion of responsibility. If outside then the creator deity has responsibility for every action that happens within our universe - including every "free" choice we make).
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