You can sign up for the beta here, but there's no date for when the app will actually be available. Getting to Android before Twitter has a chance to launch Periscope is definitely a good tactic for Meerkat, although doing the same on iOS hasn't stopped the app from fading into insignificance. According to analytics firm Topsy, Periscope streams were roughly three times more prevalent than Meerkat as of last week. Twitter has also confirmed that Periscope is on its way to Android "soon," so there's a good chance that it'll launch on Android first anyway.