Buld is also available here:

https://plugins.gwtproject.org/eclipse/gwt-eclipse-plugin/4.1.0-rc1/

It's a link to an update site, instructions here

https://wiki.eclipse.org/Eclipse_Project_Update_Sites

Tested with 2023-09 and 2023-12.
There are some minor problems, that need to be solved:

1. SDBG is still referenced in the content.xml.gz as additional repository. But it has been removed in the last build, so it should not be referenced, because that causes eclipse to ask to trust the SDBG site.
2. Seems like the Code Signing Certificate from Vertispan has been expired?
3. Version number while installing is saying 4.0.1... Should be 4.1.0 ?
4. GWT 2.7, 2.8, 2.9 and 2.11 are selectable, but 2.10 is not. I can live with that, because we should really separate the GWT Plugins anyway as discussed in our chat.

Besides this, the Plugin works for me after installation.

What are the plans to publish on marketplace!

First RC2.

In RC2 there will just be what @keinhaar said above.
RC2 will be published to a site, people will be able to test, and we will be able to tag final and release.
Hopefully a week.

If you're so eager for a release, consider testing the RC1, and the RC2 when it's ready.
It takes minutes