I scrambled to find anything about it and came up empty.  No press releases, no announcements, nothing.  

Suddenly I saw a Twitter post from the BABYMETAL account.  Another from the Dethklok account.  I think that's official enough.  Tickets went on sale just a few minutes after the posts. 

There will be two shows at The Masonic in San Francisco. Both BABYMETAL and Dethklok will perform, with Dragonforce and Nekrogoblikon performing one each on the two days (the former on 4/24 and the latter on 4/25).  I'm wondering if the Kami band will come out from Japan or if they'll be using locals again. 

As mentioned, BABYMETAL will perform at the Sick New World festival in Las Vegas, NV on 4/27.

Dethklok will be on tour with Dragonforce and Nekrogoblikon. 

For those in the Bay Area, take this shot. You might be waiting for a while if you don't. 

BABYMETAL 
4/24 San Francisco, CA - The Masonic (with Dragonforce and Dethklok) 
4/25 San Francisco, CA - The Masonic (with Nekrogoblikon and Dethklok) 
4/27 Las Vegas, NV - Sick New World festival 

Dethklok/Dragonforce/Nekrogoblikon 
4/7 Myrtle Beach, SC - House Of Blues 
4/8 Charlotte, NC - The Fillmore 
4/9 Silver Spring, MD - The Fillmore 
4/11 Columbus, OH - KEMBA Live! 
4/12 Cincinnati, OH - The Andrew J Brady Music Center 
4/14 Indianapolis, IN - Egyptian Room - Old National Center
4/15 Waukee, IA - Vibrant Music Hall
4/16 Kansas City, MO - Uptown Theater 
4/17 Oklahoma City, OK - The Criterion
4/19 Albuquerque, NM - Revel Entertainment Center
4/20 Flagstaff, AZ - Pepsi Amphitheater 
4/21 Riverside, CA - Riverside Municipal Auditorium
4/22 San Diego, CA - The Observatory North Park 
4/24 San Francisco, CA - The Masonic (with BABYMETAL) 
4/25 San Francisco, CA - The Masonic (with BABYMETAL) 
4/28 Spokane, WA - The Podium 
4/30 Billings, MT - Metra Park Arena
5/1 Idaho Falls, ID - Mountain Center Arena 
5/2 Garden City, ID - Revolution Concert House and Event Center
5/3 Portland, OR - Roseland Theatre