The league shows  have now been posted on the website – https://mgagb.co.uk/rules/leagues/temp/

You can also see full details of the league changes – https://mgagb.co.uk/rules/leagues/2017-open-league/

The dates list continues to be updated and can be accessed via the following link: https://mgagb.co.uk/rules/leagues/2017-open-league/