With Windows Phone 8 now allowing 3rd party developers to write appointments to the Calendar store it has been hoped that a full-fledged 3rd party PIM could finally be written for Windows Phone.
Unfortunately it seems that while the Windows Phone 8 API will allow developers to write appointments to the calendar store, it will not allow them to edit or delete existing ones, which would of course leave 3rd party apps fatally crippled.
Are our readers disappointed? Let us know below.
See the relevant thread at MSDN here.