On December 5, all versions of Dead Rising 4 will get some of the more often improvements that fans have requested for months. These updates will drop alongside the release of the PlayStation 4 version of Dead Rising 4: Frank's Big Package.

So what can we expect then? Capcom provides the details.
Human Enemy ImprovementsDistress CallsOther
The team is also looking at additional ways to improve the overall gameplay experience. These include improved controller responsiveness, faster attack speed, faster zombie horde awareness, more aggressive pursuit, rebalanced weapon distribution, improved zombie AI, mission tuning and more.

But did they add back in the original voice actor for Frank? I think not! Boom, got 'em.