

I am currently using 3.10.0S, which is IOS 15.3(3)S as it is the first release to support(unofficially).

I was quite happy to try as I use Virtual Box a lot. Well, when Cisco released version 3.10, is supported more virtual machines and it looked like it had the possibility to run in Virtual Box. But Cisco had limited its use to VMWare based technology like ESX and VMWare Player/Workstation. Just a little while back, Cisco released a virtual router called CSR 1000V that can run in a VM. Virtual networking is becoming more and more popular.
