Event update notification (don't send option) or just new invitees.

Sometimes I will set up a meeting, then need to add an invitee (or more than one). While there are times that it is important for all the invitees to know about the additional attendees -- lots of times it isn't (and the extra email is just spam for the original attendees). Other calendar programs provide the option to send the updated invite to everyone or just to the newly added people. Would be great to have that option here too.