You might want to take note that your result is from a Google search and that can be unreliable at times or even misleading.
What I got was the following (read the last line carefully!)
"No, H&R Block does not require Windows 11 for its 2025 tax software. The minimum requirement for its Windows desktop software is Windows 10
The system requirements for the 2025 tax software (for tax year 2024)"
I also found the following on Reddit posted by a user that actually called Block support ~10 days ago:
"Well, I called and there was no commitment on whether the 2025 tax year software (filing in 2026) will work on Windows 10. They mentioned that the software will be available in early November."
