Although it doesn't mean anything, here is a question on a FAQ sheet that my dealer gave me.

What about model constraints – is the SS model expected to be constrained?

All SS models come equipped with 6.2L V8 engine. All LS and LT models are equipped with the highly efficient, powerful 3.6L V6 engine. The results of our early intender survey indicate the majority of the demand will be for the 3.6L V6, however, the plant is preparing for a 50/50 production split between V8 and V6 engines.