Which civics test will I take, the 2008 or the 2025 version?
The date you filed Form N-400 decides it, not the date of your interview. Filed on or after October 20, 2025: the 2025 test. Filed before that day: the 2008 test, with 10 questions from a list of 100 and 6 right answers to pass.
USCIS says the 2025 version is based on the 2020 test, with changes to how it is given. Its list has 128 questions instead of 100.