Dear IPC-competitor, The 5th and 6th test domains are now available. One of them ("pathways") is a new domain inspired by the field of molecular biology, and specifically biochemical pathways. The other one ("rovers") is an extension of a known IPC-2002 domain to include some of the new features of PDDL3.0, as well as some new problems for the propositional and metric-temporal variants. A short description of these domains is attached. There is still one final domain that we would like to release (hopefully in a very few days). Some teams have not sent their (1-3 page) abstract for the IPC-5 booklet yet. Please send it as soon as possible, so that we have the time for a quick check before inclusion in the booklet (and, if necessary, for receiving a revised version). Regards, Alfonso