Eh. I'm not sure it will be needed.
One of the benefits of the Frostbite engine is platform modularity (or so we've been told). They can easily share resources across all of the platforms (including old consoles, new consoles and PCs), but still optimize and design them in very separate ways. This isn't going to be a port of a console game with a PC UI, for instance. It is going to be optimized for the PC, simply because Frostbite allows the developers to optimize for the consoles (all four of them) AND optimize for the PC in parallel, with resource limitations of one system not putting up barriers for another.
This is not something that previous engines did well (or at all, in some cases). I think the chances of a PC version being cranked up to Ultra on the graphics setting will be as good as any Hi-Res HD texture packs. I could be wrong, but that was my impression on how Frostbite was designed to help support multiple platforms (once Mac compatibility is incorporated into Frostbite - which could happen tomorrow or 2016), my understanding is that they could do the exact same thing there as well.