Comicvine’s page detailing The Flash #4 includes Eric Basaldua’s variant cover for the issue. DC seems to have stopped promoting the alternate covers beyond naming the artists in the solicitations. The last one I saw on an official site or press release was the variant for issue #1.
It’s been interesting to look at the different approaches various artists take to the new costume, as well as to compare the mostly story-focused, stylized and representational covers from regular artist/co-writer Francis Manapul to the more standard “Flash running/stopping” covers used for the variants. Of course, I have no doubt that many of the variant covers were assignments to “draw a Flash cover,” rather than to draw a Flash cover for a particular story or even issue.