The notion of omniscience is of course something I am familiar with from my Christian past. I disagree with that which imagines it to mean knowing all things, all data, past, present, and future in the details of everything like some sort of hyper-scientific and Greek Fates sort of encyclopedic knowledge. That is not omniscience.
I understand omniscience as deeply simple. It is seeing past all facades, all forms, all illusions to the very nature of all that is. Bare, naked, pure, true.
That is all. That is everything. It has nothing to do with specific information, but purity of insight into the bare soul of all that is. That is omniscience.
If you are responding in the POV of the God figure, no, sorry. Information is a particularly important aspect of the state of being "all-knowing," and if God was limited from future information he isn't infinite, nor perfect, nor all-knowledgable, nor all powerful and hence loses his God status. But if he does know all knowledge free will is an incompatible concept. Theists really screw themselves in the corner on this one.