Get your taxes done using TurboTax

The problem is Apple, not Intuit.  Apple deprecates old hardware, which would force Intuit to either use the old software developers kit (SDK) that supports old hardware but not the newest models, or use the current SDK that removes support for older models (or, I suppose, develop two completely different versions with different SDKs, but that would mean making 4 separate versions for Windows, online, old Mac and new Mac).  I don't think it would be cost effective.