As noticed by Brian Webster, Apple has removed the existing distinction between its iOS Developer Program and Mac Developer Program. Now there is just the one Apple Developer Program which gives you access to the software, tools and beta OS releases for OS X, iOS and watchOS. The Apple Developer Program costs US$99 per year, which means developers who work on both iOS and OS X will save a bit of money, no longer having to pay for two US$99 programs every year.
One developer program now, instead of separate ones for Mac/iOS. https://t.co/nBGO4k6Txc
— Brian Webster (@bwebster) June 8, 2015
Jonathan Kingsley also points out that developers do not need to have an Apple developer membership in order to test their app on their devices. This will be most useful to those who are just starting to learn app development and those who have not yet submitted their first app.
— Jonathan Kingsley (@JFKingsley) June 8, 2015