While there hasn't been any front-page news out of the project in a while, GrSecurity is still an ongoing effort to harden the mainline Linux kernel.
GrSecurity is still going strong after one decade with its kernel patch that seeks to provide proactive security and better protection against zero-day vulnerabilities.
What's new to report now on GrSecurity is yesterday they pushed out a new test patch that supports from the Linux 3.0 to 3.12.6 kernels. This latest patch has various tweaks and new security improvements and better restrictions. Those curious about the changes being made by the project, see their test change-log
For those preferring stable releases, updated just after Christmas was their stable patch for the Linux 2.9.1 through Linux 2.6.32 kernels as well as the Linux 3.0 through Linux 3.2.53 kernels.
Those security minded Linux users that haven't checked out GrSecurity in a while can stop by GrSecurity.net
for all of the details you'll need for hardening your Linux kernel.