Hey micke,
It is always best to go with the latest version as there will be a lot of fixed bugs. If you want a detailed list of what was changed then please refer to the link that Webtreats has posted above.
Let us know if this helps.
@Redef1ned,
Hello Redef1ned, when you update your theme make sure that you completely delete your previous theme and then copy over the freshly downloaded one. Also make sure to clear your browser cache and any cache that your plugins might be using.
If the problem still persists then give us a link so we can take a look. Let us know if you get it working.