Since most tracks have already been released on pac albums, I don't see why amaru wouldn't allow this release to go through. It'd include nothing we haven't already heard verse wise from pac, it'd give amaru the chance to earn more green from the release, and because it's headed by duck down records, Amaru could have them pay to clear the samples. Essentially what that means for Amaru is alot of money, with very little effort. Duck down would promote it, fund it, and basically do all the work. All Amaru would need to do is give the ok to use pac's verses.
But I'll believe it when I see it.