2017-12-14. Technical News 176 provides instructions that apply to Handlebar End Weight Fixings, Coolant Expansion Tank Cover Fixings, Airbox and Immobiliser Connector Anti-Tamper Foam Pad, Scheduled Maintenance Chart, Rider's Seat Fixing, Triumph Diagnoatic Tool - End of Support for Mictosoft Windows Vista, Temporary Packing Crate, Steering Lock Removal and Installation, Exhaust Clamp and Bolt Assembly, Service Manual Update - Purge Control Valce and Engine Breather Cover, Belly Pan Panel Assembly Fixings. NHTSA's copy of the document (PDF)
Bulletins from the manufacturer that mention a maintenance schedule or a service interval, as NHTSA summarises them. They are not the schedule itself: read the document, and the owner's manual.
Position 8 of a VIN names the engine on many vehicles: how to read a VIN. Safety equipment depends on the trim, so decode a VIN to see what one vehicle has.