I’ve posted much information on Social Media about this event already, but just to be sure everyone actually realized this is happening I will post it here too:
SUMMER EUC 2023 will happen in Marchtrenk, Austria.
If you need any more information check out the EUC Instagram account or the following website:
http://www.flyin-unis.at/en/1197-2/
Also registration is open, please sign up soon 
cheers, chris