IMP 2.5.0 is now available. This is a bugfix and minor update release. Most notably the documentation has been revised and updated; we now provide binary packages for Ubuntu 12.04 (Precise Pangolin) in addition to 14.04 (Trusty Tahr); a lot of obsolete and deprecated functionality has been removed; support for OpenMP and MPI is improved; and the IMP::base and IMP::kernel namespaces are now deprecated in favor of the top-level "IMP" namespace.
See the http://integrativemodeling.org/2.5.0/doc/manual/changelog.html for the full change log.
Check it out at http://integrativemodeling.org/
Ben