Eric Slivka, MacRumors:
Users signing up for any paid storage plan, including the lowest tier priced at $20 per year for 20 GB of space, automatically receive unlimited storage space for music in MP3 and AAC formats. The change leaves the full paid storage amount available for other content such as photos and documents. This offer is available for a limited time.
The wording of “a limited time” seems desperate, rather than gracious. If you want to be a direct competitor, you had better be feature-complete, all of the time.