Release Notes: This release improves support for reading and transforming mRNA array data. MCL has acquired an option to sparsify input graphs, and analysis modes have been split off and are now available as a mode in the clm program. A bug introduced in mcl-09-182 in the cluster interpretation routines has been fixed. The mcx program can now compute both node eccentricity and betweenness centrality parallelized over multiple machines and multiple threads. Minor improvements have been made throughout the entire suite of programs.