Board Thread:Plants vs. Zombies 2/@comment-25825221-20150603213009/@comment-5079138-20150604000755

He's right, it's just a beta level, since contents in beta can change at any time. That means, it can be deleted in the next beta builds so that it doesn't come in the final version.

Off-topic, but still related to beta content changes:

I ever watched Windows Whistler (XP beta) videos, and I noticed that there's a beta Luna theme, which is darker, and slightly different. Also, there's a "fade in" animation on the taskbar when you start up Windows, which was removed when MS decided to rename it to Windows XP.