In response to feedback after the May 11 update to the Regulations, the WRC is updating the Regulations and Guidelines with the following changes. These changes are about puzzle defects at the end of an attempt:
This change is effective for all official competitions starting May 21, 2013.
Starting with the May 21 update, all significant updates to the WCA Regulations and/or Guidelines will be announced by the WRC in a post at www.worldcubeassociation.org/regulations/announcements
Such posts will also be made “sticky” on the main WCA homepage for a while, so that they are always at the top of the page.
The WRC will try to make sure such changes are only announced and put into effect at the beginning of the week (Monday-Wednesday), so that Delegates and competitors have time to learn of the changes (and respond with any urgent feedback).
Nevertheless, delegates and competitors are always encouraged to check the date listed on the current English Regulations before using a saved/printed version as reference for a competition.