Hi,

loving K2 after installing earlier today but there seems to be no K2 version of the Joomla function 'show unauthorized links' ?

I use this to provide guests a preview of an article which when clicked on takes them to a login/registration page.

Look forward to hearing if this is implemented? Have looked at the obvious places and can't find it!

Unfortunately this functionality is not present with K2 by default.
You can either do this via template overrides (requires coding) or you can look for an extension at the JED or getk2.org/extend