The 49er Thursday Night game was on NFL1, which must be in a pay package because I couldn't find it in my cable guide. Anyway, they beat the Rams handily and are now 2-2. They also travel to London later in the year on Oct 27 to play the Jaguars. NFL London 2013 at Wembley Stadium | Vikings v Steelers & Jaguars v 49ers
Fox will carry the SF/Jaquars game at 10 AM pacific time, so 1 PM eastern. In other words, except for location, it looks like a regular broadcast game.
Sunday's Steelers/Vikings game is listed for the same time period on CBS.