I've just found these thrilling new stills from WALL-E at the movie website FilmoFilia.
(Slightly cropped all three to remove an unsightly watermark.)
It's hard to see, but if you look closely at the top image, you'll notice at that WALL-E is letting go of what appears to be the mysterious plant growing in the boot. EVE is somehow responding to seeing the plant. After all, that's what her type of robot was designed to do –search for plant life.
Can't wait till June 27!