If you read the article carefully, the rifle as reviewed is essentially still an engineering prototype out for field testing. Note the part where Layne Simpson talks about some changes that they will be making based on his evaluation, etc. Also the part where in the spec table for calibers it says something to the effect of '6.5-284 (as tested), other long range calibers' meaning 'not in production so as yet undecided'
It does look like a pretty slick setup; kinda got me wanting one as well. Either 6.5-284 for chucks, 'yotes, deer, maybe an antelope trip, or maybe 7mm RM to include an elk in that mix. Either way looks like a nice rifle.