The IRS has not even announced when they will open e-filing for the season, usually it is the last week of January. So even if Turbotax did allow you to file early, it will just on a server somewhere until the IRS opens. Turbotax can't e-file until the forms are approved by the IRS. As the IRS has a lot of changes this year, there might be delays even with simple returns. And if you have children, the IRS might have created a rule that tax providers can't file until form 4547 is ready, even if some taxpayers don't want to use it.
