VMware released vSphere 4.1 with a couple of new features like “Memory compression”, “Storage I/O Control” and much more. I’m not going to repeat all the information, because you can already read it here:

One thing that I don’t read is that vMotion is now part of vSphere Standard edition. And that’s a big improvement for a lot of organizations who don’t need all the features of Advanced or Enterprise (Plus), but do need vMotion for maintenance for example.