MEPIS has released SimplyMEPIS 6.0. This is the first public release of SimplyMEPIS to incorporate an Ubuntu foundation. Based on the Dapper LTS package pool, 6.0 is designed for stable long term use and support.
See the announcement
Warren Woodford of MEPIS said, “Converting MEPIS to the Ubuntu pool while incorporating the latest Open Source software advances has taken several months, but it's been worth the effort. The Ubuntu team did a great job with the development of Dapper LTS. During the building of 6.0, we've enjoyed an unprecedented response from testers in the MEPIS community. Their bug reports and insights have been a big help. This appears to be the best version of SimplyMEPIS to date. Enjoy!”
There's also a write-up at Desktoplinux
SimplyMEPIS 6.0 takes the form of a combination CD that implements live/installation/recovery functions all in one, according to the project. This means you can use it as a bootable live CD, without having to install it onto your system's hard drive, or use the CD to install the OS permanently on your system.