We are pleased to announce GNU Guile 2.2.0, the first of a new stable release series. More than 6 years in the making, Guile 2.2 includes a new optimizing compiler and high-performance register virtual machine. Compared to the old 2.0 series, real-world programs often show a speedup of 30% or more with Guile 2.2. Besides bringing the compiler and virtual machine, Guile 2.2 removes limitations on y