This year's HALLOWEEN PARTY 2018 is sponsored by video game developer XFLAG
https://natalie.mu/music/news/298590
HALLOWEEN PARTY 2018 special site has opened :
http://hwp2018.hyde.com/
This year's website is more user friendly in that for each artiste's name listed , they further summarise on which day/s they will perform and if they perform standalone or as part of HALLOWEEN JUNKY ORCHESTRA
They should have done that years ago but better late than never