I am on TuboTax desktop and I too get the following message:
"You've done a great job starting your taxes early, but the IRS is still working on finishing up the Schedule K-3 for 2021. That means this area isn't quite ready yet.
Check back soon and we'll help you finish up.
Let's keep working on other parts of your return."
Even though the link provided says the K3 form is "available", it also says unsupported for efiling. Since the desktop TurboTax provides efiling, this means it is for practical purposes not availabe to those who have purchased the desktop TurboTax.
What to do?
