On 7/26, day of the 20th anniversary:

Times in JST

00:00 - Imas Channel 20th anniversary PV, most likely
SfP - 2nd 765 collaboration starts

10:30 - TD announces the implementation of something. The 24/7 live switches to a AS feature

11:00 - 47 Prefecture illustrations shown on the Portal. Additionally, SOMETHING changes.

13:00 - 5 hour livestream of music to commemorate 5 years of Imas Channel

18 JST - The 20th anniversary event on the Imas Channel, Nico Live, and X (Free)

21 JST - Special video premieres and Haruka sends a special mail...