What we know...
Who: Bob Kurtzman, Co-Producer of ST09, STID
What: New Trek series not involving the reboot cast. Since the guy who help create the nuNiverse (see what I did there?) also created this, expect this to take place in the rebooted reality that hates "real" Trekkies.
Where: Pilot episode on CBS television network (USA) with subsequent episodes airing on their proprietary streaming service "CBS All Access". Show will be licensed out to international networks to air as they wish.
When: Debuting January 2017. Don't yet know if subsequent episodes will "dump" (like House of Cards on Netflix, or be released on a traditional weekly schedule. Also don't yet know if subsequent episodes will eventually air on traditional television after the initial release.
How: Magic beans.
As for CBS not believing in the show enough to air on their televison network, they're probably right. CBS has high standards for ratings and their current lineup is providing it.
Those shows also aren't terribly expensive, compared to the expensive of producing a weekly sci-fi show. Their costliest shows are probably NCIS and Big Bang Theory and they've earned it being #1 in their demos for the better part of a decade or more.
"Having a brand new, untested show cost as much as those? Nope. But we'll throw it on this streaming thing, treat it as its flagship and go from there."
The bar for success is much lower on something so new. We're much more likely to see multiple season on All Access. If it was on CBS it would have one chance - and probably not make it - then get cancelled and replaced with NCIS Minot.