From the back cover: "3055 has ushered in a new breed of BattleMechs designed specifically to counter the technological advanced weapons used by the Clans. Be ready for battle with record sheets for these bold new designs.BattleTech Record Sheets Volume Six: 3055 Mechs contains filled-out record sheets for all of the new Inner Sphere BattleMechs, Clan OmniMechs, OmniFighters and second-line Clan Mechs in BattleTech Technical Readout: 3055." User comment: Published alongside volume 5 of the record sheet series, this record sheet pack was the last one to include a volume number; future record packs simply listed a Tech Readout number. It also includes an Errata section for BattleTech Technical Readout: 3055, as well as combat values current at the time of printing. Even with the errata, the T-IT-N10M Grand Titan still isn't a legal 'Mech, though.