This year we made a switch to having our annual Prospect Guide as an eBook. The benefit to that is we could release multiple updates of the book. The first release came back in December, with our initial Top 50 prospects. The final release will come before Spring Training, with the full book.
We were also able to do smaller updates in between, which worked out well this year, as the Pirates were expected to make some trades from their MLB roster. They did that this past week, trading Gerrit Cole and Andrew McCutchen. They received four prospect eligible players in the deal, and all four ended up making our top 50.