History/Release Notes - Alpha 13.3 (2015-12-14) added
This is the Version History as best as I've been able to gather from the start of 7 Days To Die on Steam.
Please before reporting any bugs check to make sure you've compared to the changes in version history, any known issues, and that it can be reproduced on a newly created world in the version you report the bug against.
Assume any known issue that is not specifically mentioned as fixed is potentially still a known issue.
If you want to see the Release Notes for a new version before I get a chance to copy them over, they can usually be found at: http://7daystodie.com/news/
If I have missed any releases. Please let me know with links if possible.
If you want to know the version history before Steam I would suggest this link:
http://7daystodie.gamepedia.com/Version_history
Info about playing older Steam versions:
Playing Older Versions