Interestingly, most pro 6 screen protectors on Amazon renamed to include the pro 7 and the one I got a couple weeks ago has a cutout just barely wide enough to not cover both mics.  So if you already own a screen protector, it'll most likely work fine for the 7.

I bought some screen protectors for the Pro 6 per an advice I received from a MS store sales rep that the Pro 6 and Pro 7 has the exact same layout.

However the Pro 7 has these mics at the top which the Pro 6 screen protectors don't have holes for.

Just sharing.

INFO: Screen protectors for the Surface Pro 6 doesn't fit the Surface Pro 7