This post will be updated as announcements come out for start times for 9/29 from the twelve day selection process that most TV networks adhere to. Please understand that games can be held until next Sunday if a broadcaster wants to wait on the results of the Week Four games. Most conferences have the possibility of having all or part of their games held for a six day hold of the start time.
The list of available TV windows are based on media websites, TV listings and press releases. They can change based on the needs of the broadcaster or the conference.
Here's what I guessed based on the available openings (they will prove to be incorrect) and here is the current schedule for the week as several FBS games do have their time & television/webcast assignments already accounted for.
The number of six day holds available for each conference
Big 12: 4
Big Ten: 4 (I think, only 3 were used last year)
Pac-12: 4 (2 each for FOX Sports and ESPN)
12pm ABC: Syracuse at Clemson
12pm ESPN: Arkansas vs. Texas A&M
12pm ESPN2/ESPNU: Texas Tech at West Virginia
12pm ESPN2/ESPNU: Temple at Boston College
12pm FS1: Central Michigan at Michigan St.
12pm FSN: Oklahoma St. at Kansas
12pm SEC: UL-Lafayette at Alabama
12pm BTN: Indiana at Rutgers
12pm CBSSN: Army at Buffalo
12pm ACC RSN: Bowling Green at Georgia Tech
12:20pm ACC Network: Virginia at NC State
2pm ESPN3: Massachusetts at Ohio
3pm ESPN+: Kent St. at Ball St.
3:30pm ABC: Baylor at Oklahoma
3:30pm CBS: Tennessee at Georgia
3:30pm ESPN2/ESPNU: Florida St. at Louisville
3:30pm ESPN2/ESPNU: Pittsburgh at UCF
3:30pm FS1: Texas at Kansas St.
3:30pm BTN: Purdue at Nebraska
3:30pm CBSSN: Cincinnati at Connecticut
3:30pm ACC RSN: Rice at Wake Forest
3:30pm ESPN3: Old Dominion at East Carolina
3:30pm ESPN+: Western Michigan at Miami (OH)
4pm ESPNEWS: Nevada at Air Force
4pm SEC: Southern Miss at Auburn
4pm SEC Alt: Tennessee St. at Vanderbilt
4:30pm FOX: Michigan at Northwestern
6pm ESPN: Florida at Mississippi St.
6pm Pac-12: Utah at Washington St.
6pm ESPN+: Northern Illinois at Eastern Michigan
7pm ESPN2/ESPNU: Iowa St. at TCU
7pm ESPN2/ESPNU: Virginia Tech at Duke
7pm ESPN3: Charlotte at UAB
7pm ESPN+: Arkansas St. at Georgia Southern
7:30pm ABC: Ohio St. at Penn St.
7:30pm SEC: South Carolina at Kentucky
8:30pm FOX: BYU at Washington
9:15pm ESPN: Ole Miss at LSU
10pm Pac-12: Oregon St. at Arizona St.
10:30pm FS1: Oregon at California
10:30pm ESPN2: USC at Arizona
10:30pm ESPNU: Toledo at Fresno St.