Chevy has been hard at work revitalizing its Silverado truck lineup. But it still has one more version to roll out. And roll it out it will next year.

Previewed here for the first time is the forthcoming new Silverado HD. It’s set to debut sometime in 2019 as a 2020 model. At that point it will slot in between the recently introduced full-size, light-duty Silverado, and the medium-duty Silverado 4500/5500/6500HD.

Now if you’re reading this and wondering how “heavy duty” comes in between “light duty” and “medium duty,” it comes down to classifications. Under US gross vehicle weight ratings, Class 2 pickups like the Silverado 1500 are considered light trucks. So are Class 3 models like the forthcoming Silverado HD (in question). The Silverado 4500/5500/6500HD is a “medium” truck – in between consumer pickups and heavy big-rig tractors. (Think Peterbilt and Kenworth, not Chevy and Ford). So the Silverado HD will fit, in terms of size and capacity, in between the standard (light duty) Silverado and the medium-duty Silverado trucks. Got it? Good.

Expect the new model to be offered in 2500HD, 3500HD, and 3500HD chassis-cab configurations. (Pictured is the 3500HD model in Z71 spec.) They’ll start rolling off the assembly line in Flint, Michigan, “in the third quarter of 2019.” That means sometime in July, August, or September. But we’d expect it to be revealed by July. Chevy says it’ll be the third new Silverado model introduced within 18 months, and the new light-duty Silverado launched in January. After that, we can anticipate GMC to roll out its version of the same.

“Chevrolet has built more than 85 million trucks in 100 years and we have applied that accumulated truck expertise to the new Silverado range,” notes Chevy chief Alan Batey. “All three Silverado models offer a wide range of choices, as no two truck customers are alike.”