Do we know if the extra dice and template you can buy separately are in the same wave as the core set + 8 expansions?

From what I can see they are the seventh and eighth expansions. Veers and snowtroopers come later. Most likely with their rebel counterparts

If we look at the product codes the templates and dice are listed as SWL03 and SWL02 respectively. Theat does make them expansions to SWL01 A.K.A. Star Wars: Legion.