“Yes, TU4 is coming a smidge before Breakdown. The new loot distro system is the main new feature. And bug fixes, of course,” stated Undead Labs when asked about the update on its Twitter page.
Breakdown entered Microsoft pre-certification testing earlier this month. The DLC will deliver a new game system which helps survival mode becoming more challenging as players progress.
Undead Labs previously answered questions on the DLC. You can find that post here (undeadlabs.com).
State of Decay has been a top seller on Xbox Live since launching back in June. Undead Labs most recently unveiled an early PC version of the game through Steam.