Plex just last month gave its Android app a big overhaul that turned it into a full-fledged media hub; it's now the iOS app's turn. A Plex for iOS 3.1 update adds the same Mobile Media Server that we saw earlier, letting an iDevice dish out both its photo albums and synced content to any other Plex client, whether it's a PC or a Roku box. It also introduces the extra-refined library filtering you see above, push notifications for social interactions and the rough version o
