Per the Adult Science Radio official broadcast and the Steins;Gate 10th anniversary official website, the second Steins;Gate 10th anniversary project has been revealed: an event in Akihabara that will be held between July 27 and 28, 2019.
UPDATE: The event’s title is now known (Operation Gullveig).
作戦発動は、2019/7/27(土)~28(日)
— 科学ADV公式◆STEINS;GATE 10th (@kagakuadv) June 26, 2019
場所は秋葉原!
作戦の遂行には諸君らの協力が必須だ!
詳細は、後日この科学ADV公式ツイッターと公式サイトにて公開!
スケジュールを空けて待っててね!#シュタゲ10周年https://t.co/CcRtjWyhce
Details on this upcoming event are very sparse at the moment, but the KagakuADV Twitter account has promised further details at a later date.
The stream also confirmed that Asami Imai (VA: Kurisu Makise) will be at the previously announced “Science Adventure Live” concert.
UPDATE (July 25, 2019): New information on the event has been made available per the Steins;Gate 10th anniversary website. According to the website, the two-day event is a stamp collection event with prizes. The stamps will be made available across eight different stores in Akihabara.
The website states that a Metal Upa uchiwa fan prize can be collected if one has five or more stamps, though supplies will be limited (500 of these fans will be available).
A Kurisu uchiwa fan will also be made available for free while supplies last. Notably, it appears as though further information on the Science Adventure Live concert will be present on the backside of the fan.
Two raffles will also be held on the KagakuADV Twitter in relation to the event. The first, held prior to the event, will feature Steins;Gate Elite/Steins;Gate: Divergencies Assort sets (3 winners) and Metal Upa uchiwas (5 winners) as prizes. The second, held after the event exclusively for those who collect all eight stamps, will feature a reprint of an original Steins;Gate poster (3 winners).