As far as I'm aware it's usually contractual obligations that dictate the release schedule of content, although I heard that getting testing time with a real WTCC driver may have been part responsible for the delay.Is there a reason all the non-DTM series are released a year late and not the year of? Does it have to do with contract issues?
As the WTCC 2016 season gets ready to kick-off, I sit here waiting for the 2015 content which will be "out of date" immediately upon release.