Sonar 1.3 is out today, bringing a wealth of billing improvements. You can check out the entire list here.
Our next major update, 1.4, will bring automatic network mapping and detection of parent/child relationships on the network. More news will be forthcoming about those features shortly.
We are also well underway on our 2.0 update, which will bring a massive overhaul to many parts of Sonar - stay tuned for in depth details on 2.0 later this year!