The Perseus Books Group is expanding their digital distribution service Constellation to make it an option for any independent publisher, now opening it up to clients who are not already customers of the company’s physical distribution services. In concert with that strategic move, Perseus has been named an approved aggregator for Apple’s iBookstore, joining the list of seven other companies that we covered earlier in the week. As is the case for existing Constellation publishers, new clients can choose which of the 20 Constellation partners they want to work with through the service–from the iBookstore only, to the full roster […]