I don't really understand why people would be upset by this. There was never any confirmation that it would definitely be happening. As great as John is to Green Day fans, he's said every year since 2005 that this would come out and each year it doesn't. This is why I've never gotten my hopes up about this, and I told people repeatedly not to do that. I mean, the 10 year anniversary thing is something they've said since the premiere of it. But i'm not even ready to put any hopes up for that. When they actually announce something is when I'll be excited for it.
And the band has never promised it's release. They've done TONS of stuff that never gets a release. Songs are written, shows filmed, projects started and abandoned - Green Day does a lot of things. Just because there's a relatively small group of people who are VERY interested in something isn't enough for them to want to release it. They do whatever they feel is best for them, the things that they want to focus on, the things that they decide they want to do. That's absolutely no reason for people to feel like this is somehow a snub at Green Day fans or anyone else.
There have been times when I've been told they'd be willing to do something, and it never comes to fruition. I don't expect people to have pity for me, and I certainly wouldn't hold it against Green Day. It's their album, it's their time, it's 100% their decision, and as a fan, I'm ready to respect that.