Yes, we're all still waiting for 2018 to be updated for the extenders that were put into place Dec 19th.   

Intuit pushed the 2018 updates to the furthest back burner when the coronavirus happened.

For your situation, you may be able to fix it up with some overrides, since it doesn't really change any of the tax form line numbers (like the PMI needs to have Sch A changed)...but then again, the backlog of paper filed returns that have been stacking up at IRS the past 6 weeks with nobody working on mailed in returns, Im not sure mailing anything in right now would be wise.....