I have noticed in the past week or two that any TOS and Discovery Era Federation characters I make can't access any T6 ships even after completing the Tutorial for their faction. The exception of the 31st century starships are available after tutorial but every other T6 ship I have purchased say that the character doesn't meet the requirements for the ship. I have submitted an in-game ticket about the issue and steps were taken. I have yet to test if this issue resolves after the time switch. But I took the in-game and website explanation to indicate that the time switch was not a requirement.