Prior to O365, we could easily get the version + build via VBA/API. This enables developers to insure that end users have the necessary version to run our apps. With O365 there is no way to get the 'Version' or 'Click-to-Run', as is viewable in the UI Version 2003 (Build 12624.20382 Click-to-Run).
Updates are now pushed automatically, including breaking changes, without any warning.
There really needs to be a way to get the full version info via code.