So update on ROKU. I have a Roku 3, had the "NFL Now" App, but was instructed by Roku tech support to remove it and re-add it (today).
Now when I launched it, it says:
NFL Now is being updated for the 2015 Season! The new NFL Channel will be come to both NFL Now and NFL Game Pass*. NFL Now will become your daily destination for NFL news and highlights while NFL Game Pass will bring you replays of every game of the 2015 season.
Check back at Kickoff for the launch of the NFL channel.
-NFL Game Pass is a subscription product. Visit NFL.com/Gamepass for more information.
So looks like this will be the home to NFL Game Pass and you CAN watch it on your TV via ROKU.
It seems maybe it is not quite 'ready', and maybe it will have a login or synch option with NFL.com/gamepass (as I did with my YouTube account, Netflix, etc.)?
I've just activated my GamePass also...so I'll be watching to see when you can synch it up with Roku and report back here.
Looks like this will cost $99 to get 'most' preseason games streamed live, and access to all preseason and regular season games after they complete (on Sundays starting after the 4pm ET games complete).