Not sure we learn a lot from this article by 9to5Mac but if true it will be good to see Apple compete head on with Spotify. The one interesting aspect will be the price point. $7.99 per month is still quite a commitment for many users, as it is close to buying an album each month, something which will not attract the majority of users. The speculation on a lower point of $5 would seem tone far more attractive.
The rest of the article seems to be as informed as educated guess-work: Beats bring integrated into iTunes, new employees clashing with existing employees, slight delay in expected launch date? All a bit standard.