The developers of FreeBSD have announced that the 11.0-RELEASE will be delayed until October 5, due to a number of bugs found. Although the release ISO files were uploaded, an announcement was not yet made for the official 11.0-RELEASE and the developers ask users to hold off until it is done so.
Dear FreeBSD Community: [Corrected the date.] Although the FreeBSD 11.0-RELEASE has not yet been officially announced, many have found images on the Project FTP mirrors. However, please be aware the final 11.0-RELEASE will be rebuilt and republished on the Project mirrors as a result of a few last-minute security fixes we feel are imperative to include in the final release. FreeBSD users already running 11.0-RELEASE will be given instructions on how to safely upgrade systems to the 11.0-RELEASE-p1 in the final announcement email. Those building from source code can obtain the latest security updates from the releng/11.0 branch in Subversion: svn://svn.freebsd.org/base/releng/11.0 As the FreeBSD Project strives to provide the best possible product, the Release Engineering team decided to build an updated release to include the fixes. At present, we expect to have the final release available Wednesday, October 5th. If you have not yet downloaded 11.0-RELEASE, please wait for the official release announcement. Thank you in advance for your patience waiting for 11.0-RELEASE, and of course for understanding the reasons behind the updated release. Glen On behalf of: re@
Official announcement: https://lists.freebsd.org/pipermail/freebsd-announce/2016-September/001753.html