Woohoo update! Woohoo new songs! It may be hot (depending on your location) but it is still time to celebrate and hype!
New Songs: May 31 (Yellow ver. G/V3.xx)
8OROCHI (read: Yamata no Orochi) Public debut (+Ura)
8OROCHI will be an unlockable by one of two ways: (1) passing (something to be mentioned in a bit below) or (2) buying with 5000 Katsu Medals on the Donder Hiroba Rewards Shop.
New Songs: June 1 (Rewards Shop Yellow ver. Summer)
Asteroid NEW! 
KORG Gadget Kamata デモソング Demo Song
うさぎのしっぽ Usagi no Shippo Arcade debut 
三瀬川乱舞 Sanzegawa Ranbu NEW!  (+ Ura)
忘却のティルナノグ Boukyaku no Tirnanog NEW! 
激運！七福ハッピークルー Geki-un! Shichifuku Happy Crew NEW! 
コバヤシユウヤ (IOSYS) feat. 山本椛 (monotone)
Yuuya Kobayashi (IOSYS) feat. Momiji Yamamoto (monotone)
χ談 Chi-tan NEW! 
かねこちはる Kaneko Chiharu
New Outfits: June 1 (Rewards Shop Yellow ver. Summer)
Head: サイドポニー Side Pony 
Body: 巫女のはかま Shrine Maiden's Hakama 
Head: ショベルカーヘッド Shovel Car Head 
Body: ショベルカーボディ Shovel Car Body 
Head: 水かぶり Bucket Pour 
Body: 火消し Hikeshi 
Ranking Dojo: Yellow ver.
Ranking Dojo and Taiko School are back!... well at least some of them. Only the first 21 ranks from Shoukyu (初級) through 10-dan (十段) will be added in this update on May 31, and the normally-hidden ranks from Kurouto onwards come later in a future update. For a selected sneak peek of the song choices, visit the large image in the original post.
This also comes with smaller changes to the whole system, including adding the song choices themselves into Taiko School, and retweaking the levels of Gold Pass.
While you are not able to unlock anything more from immediately clearing 10-dan for now, you can still preview the Taiko School content to prepare for the upcoming Kurouto challenge (with the actual song choices not revealed).
Ranking Dojo Gaiden: May 31 (Yellow ver. G/V3.xx)
+) 挑戦！第３回天下一音ゲ祭の巻【裏】 (pass to unlock 8OROCHI)
Challenge! Tenkaichi Otogesai 3 ver. [Ura]
[Limited] Revived! Sorairo 10-dan
[Limited] Revived! Katsu-don Taishou
Also remember the wrong trial titles that were too late to fix last time? This is not last time any more and the fix will also come in this update.
Challenge! World Championships 2016 Qualifiers (1)
Challenge! World Championships 2016 Qualifiers (2)
Challenge! World Championships 2016 Area (1)
Challenge! World Championships 2016 Area (2)
Link to original post (Update)
Link to original post (Rewards Shop)