Hi all, I've rewatched the keynote several times and I still cannot tell if Airplay 2 will be backwards compatible with Airplay 1 receivers? I recently purchased a yamaha network music receiver to use Apple music over airplay 1 and am still within the return period so would like to know if I should hang on to this or return it as yamaha isn't on the list of manufacturers supporting airplay 2 as of the presentation yesterday. would be really handy if somebody with the os11 beta build could quickly try beaming music over to an airplay receiver to see if it works? I would do it myself but my older device is an iphone 5c. any idea on the protocol changelist going to airplay 2? That might reveal if legacy devices may be updated to support airplay 2 in the future (similar to the apple tv) Thanks!