Yup, Dave Dargo's blog is interesting too, although a bit repetitive.
http://blogs.ingres.com/davedargo

It would seem to me that they have modernised the "fringe" of ingres
(drivers, installers, etc.), working with the same core. They have
worked on the optimiser, which was rather poor: FB15 outperformed
Ingres R3 by a wide margin; most likely FB2 outperforms Ingres 2006
by a wide margin, but I haven't seen reports yet.

Their cluster and parallel query options look nice, but I suppose
they need them, working with a molasses core :^) It also seems they
backed the wrong cluster manager horse (the OpenDLM add-on, the
newest 2.6 kernels will have Red Hat's dlm built-in).

Their business plan seems to be to shore up the current customer base
(they claim 10,000 customers) by offering Linux+Ingres support as a
package, "RDBMS appliances": if you don't have to pay Red Hat for
support, Ingres looks more attractive. I guess this puts them in
oppostion against IBM's "server consolidation" pitch.

Beyond that they do "free core + paid extensions". If I'm not
mistaken a feature like distributed queries is proprietary.

Paul

PS
Dave's May 19th post is interesting. Now whay would he blog about
that? Perhaps because most Ingres employees read the blog? Perhaps
those employees are complaining about the company being an
organisational mess? After all, it grew from 150 to 250 staff in a
short time and the goals probably were a moving target as the company
was trying to find a commercial pitch.