Andy Rubin, better known as the guy who created Android and then sold it to Google only to later leave, will finally show off his new smartphone on May 30. Rubin's company, Essential, sent its first tweet on Thursday teasing the phone launch and then a follow-up tweet showing a silhouette of the device. But what is that thing poking out of the top?! Before we try to make some sense of it, here's the picture Essential shared: It kinda looks like one of those fat antennas on an old Palm Treo.