There are some big discussions about forking Hudson. Oracle's latest response seems to have triggered this reply from Hudson's main developer Kohsuke, now hired by CloudBees.
Personally, I don't see all that much negativity in the Oracle message. Actually, it seems very well balanced.
One thing I agree entirely: there is no such thing as a project "renaming". We are talking about a fork. Even if the Jenkins fork becomes the one with the biggest market share, it's still a fork.
This reminds me of the EGCS fork of the GCC which became so good it actually became the next 'official' GCC release. There is still a chance this might happen for Hudson/Jenkins so I don't see why Kohsuke seems so eager to burn all the bridges with Oracle.
I am also part of the "community", using Hudson since before it was so fashionable, and I don't see why should I be so enraged about all this? I guess I am too cynical not to notice that there are two companies involved: CloudBees and Oracle and only one of these two makes money almost exclusively from Hudson-based services. I think there's a natural conflict when for-profit companies make money from open-source software -- they'll always want to keep some proprietary "added value".
What I did understand is that Oracle has some fear of using non-Oracle infrastructure (github, etc) which seems to annoy some of the developers. But, other than that, I don't understand the need to fork the project.