The 5.5 STS edition, codename Brigantia, was released on April 16, 2012.
Brigantia is an STS (short term support) version, which was supported for one year after release. It is no longer supported.
Software versions and distro editionsThis release is based on Ubuntu 11.10 and as always it contains only free software, including:
All of the editions support 32 and 64-bit architectures.