OpenBSD 4.3 has been released and available for download. From the announcement page:
We remain proud of OpenBSD’s record of more than ten years with only two remote holes in the default install. As in our previous releases, 4.3 provides significant improvements, including new features, in nearly all areas of the system:

=> New/extended platforms

=> Hardware and driver support

=> Over 4,500 ports and much more

Download OpenBSD 4.3

Visit the offical project web site to grab installation media. You can also order CD from official web site.