As Montreal did yesterday, five more cities on the first leg of the Experience + Innocence Tour have had second concerts announced. All of them take place the day after the first announced shows. The new concert dates are:
 

• 12 May 2018 in Las Vegas
• 23 May 2018 in Chicago
• 14 June 2018 in Philadelphia
• 18 June 2018 in Washington, DC
• 22 June 2018 in Boston
• 26 June 2018 in New York City

Presales begin 28 November, with the general sale following on 4 December.

As pointed out by U2Songs earlier today on Twitter, U2.com have updated their tour FAQ. The update states the following:
 

1. You will be emailed the day before if you are a "Verified Subscriber";
2. You do not need to setup the account a second time if you already did for the first announcements;
3. You can complete the setup for these shows if you did not for the first announced;
4. If you were verified and did not purchase two tickets for the first shows, you can buy up to two for the night 2s;
5. If you bought one ticket for the first shows, you can purchase one more for these concerts