The South Korean National Security Adviser will make an announcement in the White House briefing room at 7 pm eastern

Fox media reckon they know what the announcement will be:

Sr US official tells me S Korean National Security Adviser will announce at 7 pm EST from WH:

  • an invitation from Kim Jong Un to meet Trump;
  • no change to planned US South Korea military exercises in April
  • and commitment by Kim Jong Un to stop nuclear & missile testing.