Geh... alright, I should be more thorough before I post.
From Countdown 5's posting:
たるき亭、店員の小川です。プロデューサーの皆様からの「当店のリニューアル」や「2ndPV」の要望をお伝えしたところ、7/30(金)お昼12時予定で「たるき亭」リニューアルオープンが決定したそうです!
それまで毎日「お昼の12時にランチサービスをお出ししなさい」とのことで、本日はこの動画をお送りいたします。
7/3・4に幕張メッセ5周年ライブで公開された「AC版アイドルマスター」の貴重なPVです。
ライブに参加したPも、自宅待機だったPも、ぜひ熱いコール(コメント)を送って下さいね!
This is Kogawa, from Tarugi-Tei. For all you producers wanting us to redo our site, or wanting us to up the 2nd PV, we're planning on reopening Tarugi-Tei on Friday, 30 July, at 12 noon!
Until then, we'll be popping up vids as a little lunch special for you every day at noon. 'Cause we were told to.
These are the ever important Arcadem@s PVs we showed at the 5th Memorial Live that happened 3 and 4 July at Makuhari Messe. Whether you were able to make it there, or had to guard the fort instead, please bring on the comments! And make sure they burn with the fires of your soul! [translator: yeah, feeling a little happy right now]
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I notice he doesn't actually say that they'll release the PV, but he still heavily implies it.