Current status:
It appears it is being 'feathered' in by Apple.
Some folks get the new update notice day one, some the next day, and so on.
It appears some folks can manually search for the app and get the update, and for some the current version just reopens.
Deleting and reinstalling seems to be a fairly consistent way of getting the new version right away. (But then you need to reenter eGrid > easiest way is typing it out - all 50 characters in a row - on your MAC or PC and somehow getting that text moved/sent to your device and pasting it into FxCal all at once. Keep it saved for future use. If you have a personal iPad and iPhone, this is also the easiest way when the company makes you change your eGrid)
But in all cases, please do not purchase again. If it asks you to purchase again, double check your AppleID under 'iTunes & App Store'. If that does not work, please send me feedback from the app.
Thanks for you patience.
appDude