Last week, Apple launched its long-awaited music service, enabling access to its music streaming platform and the new Beats Radio station for millions of users with the release of its iOS 8.4 update. However, those who have been using the iOS 9 developer preview have so far been unable to access Apple Music.
That changes today with the rollout of iOS 9 beta 3, which introduces Apple Music support, along with various other improvements. The last iOS 9 beta (build 13A4280e) arrived two weeks ago; beta 3 bumps the build up to 13A4293g.
Beta 3 is available now as an over-the-air update for iPhone, iPad and iPod devices running iOS 9, or it can alternatively be downloaded via Apple's Developer site.
Apple hasn't yet announced a specific date for the release of iOS 9, but it has said that a public preview version of the OS will arrive sometime this month, ahead of a full launch this fall.
Source: Apple Developer