The TurboTax software is only for tax year 2017 if using the online editions or purchased from the TurboTax website for the desktop editions - https://turbotax.intuit.com/personal-taxes/cd-download/
The minor changes to tax year 2017 will be included in the regular updates to the software. For the most part in 2017 only Schedule A is changed for medical expenses being deductible over 7.5% of AGI instead of over 10% of AGI.
The majority of the changes to the tax code occur in tax year 2018 to be filed during calendar year 2019.