As far as I know, these decisions are made much closer to the date as the top pick will depend on the state of the PL table at the time.
well BT Sport did say on 19th June
"BT Sport will go through a match selection process which will take about two weeks, at which point our live games will be announced."
so the first batch of games should be known to use one of Bt's most overused words soon.
according to reports there is supposed to be a release of fixtures tomorrow about lunchtime - but who knows