TurboTax just put out a new official FAQ on Windows 7 and the upcoming 2019 TurboTax today (October 4). It looks like 2019 TurboTax (coming mid to late November) will still install and run on Windows 7, but you'll get a warning about the OS security, etc., and recommending that you upgrade for that reason. And in tax years to follow, it won't install at all. See the full details in the FAQ linked below:
FAQ: Windows 7 end of support impact for TurboTax
https://ttlc.intuit.com/community/tax-topics/help/windows-7-end-of-support-impact-for-turbotax/01/85...
