If you're a Twitter for BlackBerry 10 user, it's time to fire up BlackBerry World and get the latest version installed. This one gets a bit tricky when it comes to the actual update, so here's the deal. If you're on BlackBerry OS 10.2.1, you should be seeing a version available with in-line action support, landscape support and in general just some bug fixes in the app. If you're running a leaked build of BlackBerry OS 10.3 though, you get at least one more new option and that is 'Night Mode', essentially a dark theme for the app. The update is live now, so be sure to grab it.