I don't recall seeing this in any of the recent emails from Newegg, and since Amazon doesn't do pre-order discounts anymore, I thought these looked like the best deals so far. I didn't see PS4 discounted though.
MK 11 (Standard): $47.99 (20% off)
MK 11 (Premium): $79.99 (20% off)
MK 11 (Standard): $53.99 (10% off)
MK 11 (Premium): $89.99 (10% off)
Looks like Newegg has other digital games for 10%+ off, but not across the board, and not all pre-orders.