A lot has been going on in the cloud this week, and two areas in particular, open-source and personal cloud storage, were the main highlights.

First of all, Diablo – the latest and first “production ready” version of OpenStack –was launched yesterday. The release is still fresh so stability is somewhat of an issue, but there are a lot of additions that will be further fleshed out and developed by the OpenStack community down the road.

Nova, Swift and Glass, the latest releases of OpenStack Compute, Object Storage and Image Service (respectively) introduce a VM deployments scheduler, multi-cluster container sync and new filtering functions with the Glass API, among other things.

OpenStack packs a lot of potential, but as Alex Williams notes, a few companies can really take that and turn it into a fully functional deployment. One of the few companies that can, though, is CloudScaling.  The team of developers led by Randy Bias also had an update this week – sources report that they raised about $5 billion in funding.  They’ll be using the new capital to develop some sort of new OpenStack infrastructure offering, though that’s about everything that can be learned about the upcoming product.

Moving on to EMC’s news, the storage titan opened up the latest Center of Excellence, a tier 3 datacenter, in Durham, North Carolina. There are 6 others like it around the world, and the new facility will be used to support over 50,000 private cloud users.

The other major headlines this week come from the personal cloud, and specifically from the direction of the more popular web-based storage and collaboration apps. Box.net reportedly turned down a $550 million acquisition offer, while it seems Dropbox – a competing service – has done the same. The only difference is that the bid on the latter was $800 million, and that it came from Apple.