In regards to tv
BBC
18 Live matches per season with second and third picks of matches in the Second Round, Fourth Round and the Quarter Finals, as well as first and fourth pick of matches the First, Third and Fifth Rounds, and first pick of the Semi-finals.
ITV
At least 20 live matches per season with first pick and fourth pick of matches in the Second Round, Fourth Round and the Quarter Finals, as well as second and third picks for the First, Third and Fifth Rounds and second pick of the Semi-finals.
There will be at least 4 games on UK TV in this round, although there have been up to 6 in the first 2 rounds so my guess is they'll do 6.
Friday PM, Saturday Lunchtime, Saturday tea time, Sunday early afternoon, Sunday early evening and Monday PM
The rest not picked for UK Tv will be spread amongst a number of different kick off times across Saturday & Sunday due to the International TV deal which as with the PL gives broadcasters for other countries chance to show more including the Saturday 3pms. There is usually a number at 2 or 3pm on the Sunday as well not on UK TV
The League Cup Semi's take place midweek either side of the 3rd round weekend so any team involved in that won't play Friday or Monday night
For what its worth who i think will be picked is (in no particular order)
Swindon Town v Manchester City (Lower v Champions)
Nottingham Forest v Arsenal (Good potential for an upset)
Manchester United v Aston Villa (The Gerrard goes to OT narrative will be too hard to resist for BBC or ITV)
Chelsea v Chesterfield (Europeans champions v non league)
Millwall v Crystal Palace (Potential for scenes no one everyone wants to see)
Swansea City v Southampton (Again good for potential for a upset)
West Ham v Leeds may knock out the Swansea match