When will TT 2019 be ready for initial year-end 2019 projections?

The initial release of the TurboTax desktop software for tax year 2019 should be available for purchase in mid-November 2019.

The TurboTax online editions for tax year 2019 should be available sometime in December 2019.

be careful when using this in that in the initial releases,  some changes may not be reflected.    they're updated online as time goes by and for desktop versions, there are periodic updates.

the online version you have has a section for estimating your 2019 taxes.