After months of speculation, Universal Studios announced this morning that the Harry Potter attraction at its Islands of Adventure Theme Park will open June 18th. Expect soft openings for annual passholders, certain events, and VIPs for weeks leading up to the official opening. Universal has promised to honor their promise to those who purchased packages, set to begin May 28th, highlighting the attraction. No word on how they will treat grad nights scheduled for April. The press release for those events specifically mentioned Harry Potter.