Yesterday, Google pushed out an update to the iOS version of the Google My Business app. But as I reported at Search Engine Land that after I downloaded it, it froze out and wouldn't let me us it. Now when I try to access it, you can no longer download the app at all.
I suspect Google pulled it because of this serious crash bug and that when it is fixed, you will be able to redownload the app without an issue.
When it comes back in the app store, you can expect the ability to quickly set your business hours for special days like events or holidays. As well as better manage permanently closed and reopen businesses via the app. The other features include a drag-and-drop menu to change your primary business category and phone number, a quick and easy way to mark whether or not your business is permanently closed and new support for landscape mode in the app.
Again, the app had a serious bug, so it was dropped from the App Store but should be back soon.
Forum discussion at Google+.