I am pretty sure that is not the case. It takes a considerable amount of time to generate the fixture list. There was an article on the bbc about it at the start of last season. The list has to be agreed by the police, teams, etc before it is confirmed. A program is used to generate an initial list this is then manually altered and checked against a number of criteria. They may have a test run of releasing the data but compiling the fixture list will start as soon as the play-offs are decided.