In any case, it feels like they will need to change something in the descrption used on Amazon (say)...
About this item says: The essential rulebook for Dungeons & Dragons (5th edition)
ASIN: 0786965606
Item model number: WOCA9217
Release date: August 19, 2014
... because otherwise the old version could be sold just like it as far as used copies, right? And just changing the ASIN or Item Model Number feels like it would be confusing. Either something about which printing it is or which version or which edition in big letters somewhere would seem standard?