The Nike Air Penny 4 has been absent from the market since 2006. Since then, the word has been that Penny 4 retros are on hiatus because the original mold was destroyed. Whether or not that's the case, it appears that Nike has remedied the situation, much to the delight of Penny fans.
@BaltSneakerShow confirms that at least two colorways of the Penny 4 are slated for Spring 2017. The initial lineup will include the original "Orlando" make-up, as well as a pair in "Triple Black." Official dates and pricing still to come.