>List building in Legions Imperialis gets an update with Liber Strategia, a 240-page book that collects and updates previous content from core rulebooks, The Great Slaughter, The Devastation of Tallarn, and The Rise of the Dark Mechanicum. It contains complete up-to-date Detachments and Formations for Legiones Astartes, Solar Auxilia, Mechanicum Taghmata, Dark Mechanicum, Collegia Titanica, and Knight Households
I like that. That should be the norm instead of a whole new edition every three years. Just a new set of rulebooks that compile every supplement and balance change made since the last one.