You are only slightly wrong with your statement. You are off by one year; macOS 27 will still contain Rosetta 2. The first version to not support Intel Binaries will be macOS 28 which will be released in September 2027, a little under two years from now. Intuit has had 5 years to get up to speed. When they owned Quicken, their Quicken for Mac product stopped working when Rosetta 1 support stopped. The online version does not support forms. I am actively looking for another App that runs on macOS and has an Apple Silicon version. I don't know what platform they used to develop Turbo Tax on the Mac. If it was a native app, I assume, they would have simply recompiled to create the Universal Binary.
You may be confused because macOS 27 will not run on Intel machines. But Intel machines do not need a new macOS to run universal binaries or Intel Binaries. So, no more macOS versions for Intel machines, macOS 26 is the last macOS that will run on an Intel Mac. macOS 27 will be the last macOS to offer Rosetta 2 support which allows Intel binaries to run. Since the only major app not ready is Intuit's Turbo Tax, as far as I know, I assume that time line will not be extended especially because of Intuit's track record going back to Power PC macs and continued, ineptitude.
