I believe the 
final required step is getting the build signed and the update site 
published.
I would agree that the WB project is 
completely dysfunctional due to lack of viable committers, and it does 
make the community look bad. For a project that is well used, no one 
(until just recently) has been interested in providing any help. I have 
asked for new committers many times over the years as our existing 
resources dwindled with no interest whatsoever. The project finally 
"broke" when we lost our Google-based build infrastructure and our build
 guy effectively stepped down. That meant we had no way to create a new 
build at all. Fortunately, Lars stepped up to create a new Tycho based 
build and became our first new committer in 5+ years (Thank you, 
Lars!!). That build had to pretty much be created from scratch and that 
has put an enormous burden on Lars' time. Getting some of the more 
difficult parts done (like the signing) have been difficult and required
 new Eclipse.org based infrastructure to be set up.
In
 the end once the new build is completely set up and automated, the 
project will be much better off at least in the sense that it will have a
 current build that will track bug fixes and Eclipse releases. The 
project is still extremely light on active committers and no one is 
actively working on the code itself. It has basically been in long term 
maintenance mode simply to support those Java IDE users who expect it to
 be there. New functionality has not been added for years although the 
existing functionality continues to work pretty well. A couple of the 
committers have some limited availability to fix critical bugs but that 
is about it. The project very much needs new committers interested in 
taking the project forward.
Lars can chime in 
with anything he needs specifically to keep this moving forward (and 
once again, thank you, Lars, for coming to WB's rescue!!).
I
 will also reiterate my plea to the community for folks interested in 
working on the project. Without new committers, WB will stay in long 
term keep-the-lights on mode with only critical bug fixes applied and no
 new functionality.
-Eric
Since WindowBuilder was not 
included in the Neon simrel, nor do you have 
a Neon (4.6) compatible build available in your own repo, this is a bad 
look for Eclipse; most Java IDE users expect GUI building functionality 
that has been there for years.
I see that Lars worked to get a Tycho-based build working, and I've 
commented on a couple of bugs*, asking what it will take to get a 
release that can be installed into Neon, but so far there has been no 
response at all. To this outsider, it really appears that the WB project
 
is somewhat dysfunctional and leadership is not being responsive to the 
community.
I'm not making accusations, just asking what it will take to get a 
Neon-compatible release of WB so the broad Eclipse Java user community 
isn't left with home-grown updates sites, questions, and FUD.
Sincerely,
Eric
* 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=437131
* 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=481842
* 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=497162