Details on the new rifle are still light, but we've seen enough to know it runs a mid-length gas system, based on the AR-180B design, similar to most other made-in-Canada semi-auto rifles. It re-uses several small parts and designs from other Black Creek Labs rifles, including the magazine and bolt release, pins, and other bits. The SRV2 Siberian has an AR-15-style barrel nut, and of course it will run AR-15 magazines (and will it also use proprietary MRX Mags from BCL? Nobody has announced any plans to do so yet).
It comes with an ambidextrous safety, non-reciprocating charging handle. There are QD attachment points built into the rails as steel inserts, so they don't wear out. For now, it seems your choice of finish is the tan upper/black lower, but it is likely that will change at some point. At this point, we've seen no details on that finish, whether it's powder-coating or anodized, but it seems likely it's the first option.
Black Creek Labs says the design may change a bit yet before release, compared to what we've seen so far. However, we can see an RCMP FRT approval from earlier this year that gives the OK to the rifle as a non-restricted, chambered in 300 Blackout, 5.56 NATO and 7.62X39. In other words, expect calibre choices among the future evolutions to come.