What does this mean"

For the High School Class of 2016:
Most students in the Class of 2016 will take the old SAT, and most colleges will convert new SAT scores to old SAT scores.

For the High School Class of 2017:
Most students in the Class of 2017 will take the new SAT, and most colleges will convert old SAT scores to new SAT scores.

Here is a citation from college board official website, and I am a rising senior, which means I am gonna handle my application this year to the college, in this case, will my new sat score be converted to the old one?

According to what you wrote, No. Not if you are in the Class of 2017. If you took the old SAT at some point, then your old scores will be converted.

Thank you!