Here we are again, proud to announce that  we just introduced .Net 4.0 support. Since that is a pretty vague phrase let me explain in more details what I mean with support.

Our goal  was i) to have all db4o assemblies compiled against .Net 4.0 (of course with all tests running successfully) and ii) get associated tooling working in the .Net Framework 4.0 so developers could start using it (and, of course, reporting any issues).

With the latest efforts we have fully achieved 1 and almost 2. As of today (Jun/06/2010), we have all db4o assemblies compiled against .Net 4.0 and most of our tools are working as expected (did I mentioned how having tests gave us a parameter to decide when we got the port working?). 

Only OMN still have issues (in VS 2010) (which we are already investigating how to fix).

As always, platform support is an ongoing work so if you want to follow the progress in .Net 4.0 area you can keep an eye on this issue: COR-1803. Over the time we expect to hear from the community which .Net 4.0 features are considered to be important to be supported.

So please, go, try out (in continuous build only!) and let us know what do you think about it.

Best

Yours db4o team.