According to Al Lutz at MiceAge.com,
"The dates for DCA's grand re-opening event have finally been chosen. June 14th will be the media day and private celebrity party, and June 15th will be the official first day of operation for customers. There will only be a handful of days for AP Previews and soft openings for Cars Land in early June, and those dates aren't confirmed yet. June 15th will also kick off DCA's new operating schedule of daily 8AM to 11PM hours through the summer."