Taxonomy formatter that shows a list of links to related nodes
You set up a contextual filter on the View Block to Content: Has taxonomy term ID.



So we need to hand this view a term ID. Since we're going to be calling this block using Context. There won't be a default value given in the URL. Therefore we have to give it one. 

Select 


Provide Default Value
Load default filter from node page, that's good for related taxonomy blocks 
Choose your default vocabulary