Today Apple (formally) announced the release of a Software Development Kit.  An SDK allows independent third party developers to create applications for the iPhone.  Applications will be distributed through iTunes and subject to Apple approval (Good: no crap malware sneaks through. Bad: you must Trust Apple’s discretion in allowing/disallowing applications onto iTunes).  In any case, this comes as really good news for me, someone too timid to jailbreak/hack their iPhone into third-party software submission. Also, for you Enterprise drones in the big firm or corporate world, Apple licensed ActiveSync to wash away all of your Microsoft Exchange woes and ease the minds of IT Staff everywhere.  Oh, yeah, and ActiveSync will allow push email, calendar and address book syncing… a.k.a. watch out Palm & RIM.  You can get all the gory details at either tuaw or Lifehacker.