ICP announced a concert series called ICP Unchugged. This means you'll get a classic ICP concert but without the Faygo.
The first event in this series that was announced on March 07, 2021 was Anime Midwest for $30 and limited to 2000 attendees. On May 29, 2021 the message below was posted on Facebook:

We are sorry to announce that unfortunately ICP will not be able to perform at Anime Midwest 2021. Refunds will be automatically sent to anyone who purchased concert tickets by the end of the day today. If you also purchased a convention pass to attend the concert in addition to a ticket, please email contact@animecon.org to be refunded without any fee.

For now this was the only concert in the Unchugged series. We'll see what the future brings.