June 19th possible first flight date?

A source has told me that June 19th might be the date for first flight of the 787. This is only a possible date whereas another source told me he heard that mentioned as a date but that it keeps changing...daily.

This date has to be taken with a grain of salt as it is unconfirmed and subject to change given the progress with 787 testing.

Also intermediate gauntlet testing should get underway sometime in May though I'm not sure when in May.