Thanks. I think I found some other answers, sort of. I was perusing the 2024/2025 Hunting & Trapping Digest and noticed some info at the bottom of page 41. While that is more about buying a member patch it does say that the 2024 edition of the record book doesn't go on sale until October.

I assume you will be able to order a copy by calling the number shown (888-888-3459) on page 41.

I was also able to find the 2023 edition of the record book here: https://huntfish.pa.gov/products/catalog/miscother
so I assume you will be able to order the 2024 edition in the same location sometime in October.