This announcement is good news. Class One silhouette racing is on, and Super GT did not lose out as previously feared. DTM, meanwhile, will see a massive upgrade. There will be two joint events.

http://www.dailysportscar.com/2018/06/24/super-gt-dtm-formally-announce-class-1-technical-regulations.html

This is a welcome development, and I hope to see how this will shake out in the coming years.