If there is one major thing I have learned in a 30+ career in technology, its that when you hear terms like "new", or "revolutionary" your best bet is to be as skeptical as is ever possible. So the concept of "new databases" is something I take with a very large grain of salt - about the size of a small Hummer!
Lets remember a few of the more recent "revolutionary" breakthroughs in technology were Windows Vista and Office 2007. Both have been major flops with such "revolutionary new technology" as asking "Are you sure?" whenever you even breath on Vista, and the Ribbon in Office 2007 which has driven users almost totally nuts. But these are just two of the very long line of rehashed old ideas, or mind-numbingly silly features presented as "new" and "revolutionary". Of course "Cloud Computing" is another concept now being presented as something "new and revolutionary" even though it was envisioned decades ago and has yet to show whether its hype or something truly revolutionary.
I would be happy to look at any "new" databases, but I fear it would simply be a repackaging of old, existing ideas - at least that is what happens to 85% of these kinds of concepts. I say 85% because that is the estimated number of lawsuits that get throw out when companies complain that other companies have 'stolen' their "revolutionary" or "proprietary" technologies. That is, in most cases, the "new" or "revolutionary" technology is found to be not new, not revolutionary, and usually something the company either directly 'stole' themselves, or stumbled upon not realizing they were infringing on others work.
Even the article you link to in your post doesn't really say much of anything - that is, it shows one company doing something different, and that is hardly revolutionary. The author then just talks in very nebulous terms about what might be coming.
Frankly, if it were my choice, I would prefer to see companies improve and enhance existing technologies and then agree more efficiently on standards. Enough with the new and improved, and revolutionary - lets get something correct and standardized across the database world - and then worry about inventing the next "big thing".