I think the hype is more about possible implications for the band's future than about the actual release. But it's not to be taken for granted that we'll actually get something out of it.
That being said, a new song (with Chester!) is still a new song and as other said above, I'll take any unpublished material from the band at this stage.
Honestly, the only way this could be an actually interesting release as a whole is if it's a live compilation from rare shows, or some "Best Performances" kind of thing, but I don't have much faith in that.