Sorry Charlie32 but at the risk of being as contentious as PPRuNe Radar the informsation was promulgated in a way that should be seen and understood in the GA community - in the AIP, the only definitive place for this information. Sorry to disappoint you but there's nothing more robust for ATC - ATC use the AIP.
More importantly, if you fly from a club (especially one where the changes might be expected to affect members) why isn't there a big sign up on a briefing board?