It's a backup solution for virtual machines running on Microsoft's Hyper-V virtualization solution. If that sentence just seemed like a bunch of buzzwords crammed together, Hyper-V backup is not for you. But, if you actually use Hyper-V and are hankering for a good backup solution, Altaro might be worth checking out.
The beta run is limited - Altaro are looking for just 250 testers. All participants will get a free license key to the final, production version. So if you're interested in helping test Hyper-V Backup, get yourself over to Altaro now and join the beta.