Remember that placeholder cover DC used when they solicited Flash: Rebirth #6 to avoid spoilers? Apparently Ethan Van Sciver scrapped that one unfinished, because he’s offering it on Facebook in an art contest.
To the right of the fully-drawn figure of Barry Allen, he’s added the new Impulse, a sketchy figure who appears to be Kid Flash, and a really sketchy figure who could be anyone (though I’m guessing Wally West — he may have scrapped the cover before he finished designing the new costume). The left side of the page is still empty.
Edit: Apparently not everyone can see the image, so here’s a smaller copy of what he’s posted.
I don’t know if it’s just me but that link to the page on facebook isn’t working.
I think you have to be listed as EVS’ friend on Facebook to see it.