Here's a really good article that sums up everything Van Halen for 2019...
https://ultimateclassicrock.com/van-halen-disappeared/
Bottom line... Van Halen doesn't have much motivation to put out any form of music. Ed's apparently dealing with on-going cancer treatments which seems a reasonable cause for not wanting to work. Alex and Wolfgang, who knows... hanging close to the family circle. Although I read Wolf worked on some guys album... can't remember who...
Diamond Dave... Vegas baby! Then some dates opening for Ki$$... Dave feels like working it appears. Whether it's worth attending any of his shows... let your heart and wallet guide you...