Oracle now ready with JDK 7 Developer Preview
By alexismp on Feb 23, 2011
As promised in his earlier "JDK 7 is Feature-Complete" post, Oracle's Mark Reinhold now announces the availability of JDK 7 Developer Preview.
This is not quite a beta but it has close to 500 bugs fixed since the feature freeze from about a month ago.
Just like any software approaching the release line, it will get harder by the week to get fixes in (they'll need to be serious bugs and require rather risk-free fixes) so you should really consider testing your software on this build and report any issues.There is a dedicated forum for feedback for this release.
There is no Mac OS X version yet, but this link should get the Apple aficionados happy.