From the preview:
When we published Strategic Operations several years ago, a lot of people instantly fell in love with what is really a pretty small part of the book…the Quick-Strike Rules. And we immediately began getting questions of “when will you release a stand-alone rulebook of that?”
For those wondering what Quick-Strike is, the easiest answer is that it is the truest form yet published for being able to play BattleTech in a true “tabletop miniatures” style and speed, while still feeling like your playing BattleTech.