Reddit reviews The Ligeti Project

The Gyorgy Ligeti Edition is definitive. Ligeti supervised all recordings and rejected what he wasn't happy with. It wasn't complete because when it came time to record orchestral works, Ligeti wasn't content with the performers available to Sony Classics. The project of recording all of Ligeti's acknowledged works in performances supervised by the composer was completed by Warner Classics in their The Ligeti Project. Originally five discs, it too was later released as a box set.

I have no idea. I really wish they would. I've got this set to help fill in some of the gaps, and this one looks good too. I'll probably get around to ordering it eventually, haha