This idea has been merged into another idea. To comment or vote on this idea, please visit WEBFLOW-I-65 More CMS date formats and in different languages.
We're missing two common, non-US date formats in the date format picker:
25 Aug 2017 (DD MMM YYYY)
25 August 2017 (DD MMMM YYYY)
Hopefully, this isn't too hard to add!