The latest firmware update for PlayStation Vita will be available to download later today, Sony has confirmed.
System update 3.30 introduces support for themes, allowing users to personalise their Start and Home screens, icons and background music. Themes will be available to purchase from the PlayStation Store "soon", although it isn't clear whether that means they'll go live alongside the update today or at a later date.
Update 3.30 also introduces the ability to see Trophy rarity just as you can with Trophies on PS4, and set up events using the Calendar, which you can then send to friends via a message or an email.