The new images and the release date were posted by NeoGAF members. It claims that the game, which is being lead by Mega Man designer Keiji Inafune and his team at Comcept, will be out on September 13 in the U.S., September 15 in Japan, and September 16 in Europe.
Little has been revealed about ReCore since Microsoft first announced the game a year ago at E3 2015. It's likely that Microsoft will reveal much more about ReCore tomorrow at its E3 2016 press event. Windows Central will be there for first-hand coverage.
Update: Two new ReCore screenshots have now surfaced online, courtesy of 'Gwyn' - a NeoGAF user known for leaking a number of this year's E3 announcements.