Excerpt from <http://decaf.kouhi.me/lovelive/> (more detail there):

A massive update is planned for July 5, 2016!

- Aqours is being formally added to SIF!
- µ's and Aqours switching function
- A new SSR rarity
- Expert songs are being added to the normal songs, and a new
  Master difficulty is being added
- A new "School Idol Skill" feature
- Seals will be able to be used to awaken cards
- The update schedule for each month will be changed

Also, JP LLSIF reached 16 million users on May 17, 2016, and one Loveca
stone per day will be given out starting from tomorrow for 7 days.

Also(2), an "Operation everybody works towards a Perfect Live!" is
running till 24:00 JST tonight, and everybody will get presents
depending on how many accumulated Perfect notes are played by all the
players these 2 days.  So far the count is over 25億 (hundred million),
clearing all the pre-set goals, so everybody will be getting 10 Loveca
stones, and additional presents are planned.

-- 
Stephen Lee <usagi@softmagi.com>