Wondering what happened to 1.11? We released a Clearspace 1.11 beta a few weeks ago, and then we decided to rename it to 1.10.1 to reflect that these are bug fixes and not releases with new features. So, 1.11 = 1.10.1.
We are going to continue putting out releases for the Clearspace 1.x series, but from this point forward they will only contain bug fixes and minor improvements. All new feature development has been moved to Clearspace 2.0, which will be available at the end of Q1 2008.