http://www.eurogamer.net/articles/2013-06-17-state-of-decay-mmo-follow-up-class4-still-in-negotiations-with-microsoft

Despite State of Decay's rampant success on Xbox Live, the MMO follow-up, codenamed Class4, isn't a done deal.

"We cannot begin working on Class4 without a greenlight from Microsoft (who owns the IP, as part of the bargain that led to the funding and development of State of Decay) and a mutually agreeable contract," Sanya Weathers, director of community, explained to me.

"We have to agree on where we think the technology is going to be in a few years (since the game will take a few years to develop); we have to agree that we have the same goals; and we have to agree on how we'll collectively run and support the final game.

"Those discussions are still in progress."

State of Decay is an open world zombie sandbox tour de force, declared our Simon Parkin, and an Xbox Live Arcade exclusive. That and some fierce marketing by publisher and platform holder Microsoft resulted in the second-fastest sales of any XBLA game ever - some 250,000 sales in two days.

There have been some teething issues with State of Decay, though - Title Update 1 didn't work properly and Undead Labs has had a stressful time, by the looks of things, repairing it.

This is a sure thing to get greenlit after the massive success of the game on XBLA. My personal GOTY so far. An Xbone SoD MMO would be a killer app.

I never knew Microsoft owned the IP, this means no PS release for class4.

Fierce marketing my ass:

We did not have an ad budget. We didn’t have a physical copy to load onto shelves, no worldwide multimedia push, no studio reputation with millions of followers. All we had was what we believed was a great game and a great community. And make no mistake, a solid game is not enough, not in 2013. Plenty of great games wither away in obscurity. This train got rolling because you got out and pushed.

http://undeadlabs.com/2013/06/news/breaking-records/

IGN was marketing their product more/better than MS. MS just had it on the Xbox Live tiles 2 days before the release.

why wasn't this game released in Australia ?

I think the MMO idea would be sick as well as a day one buy from me. On that note about to go play SoD.

It has stretched to 500,000 sales.

I can't believe how much this game sold. There is so many problems with game that's barely playable.

Has to go throught the Australian certification process first.
It also took a while to get it out in Germany (last week Wednesday).

Game is awsome