apparently, Turbotax hasn't yet updated the form so it can't be filed thru TT at this time.
Freefile (e-file it) is now closed. as of now, there is a range of when e-filing will open - between 1/15 and 2/15
https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free
you can paper file the form
https://www.irs.gov/pub/irs-pdf/f4868.pdf
