It’s progress. Bell has pushed out an update to the entry-level Sony Xperia M. It’s also safe to assume that the update has arrived on Virgin Mobile. The OS has now been graced with Android OS 4.3 Jelly Bean to the device, but also improved battery life.
No indication if the Xperia M will receive KitKat, but for now Jelly Bean is waiting for you. Check your device: press Settings >> About Phone >> Software update.