From the PDF introduction
A Web Enhancement for the Epic Level Handbook
The Epic Level Handbook provides epic-level progressions-that is, information on the powers, abilities, and bonus feats gained by epic-level characters-for all 11 classes presented in the Player’s Handbook, as well as the six prestige classes detailed in the DUNGEON MASTER’s Guide. But with the vast number of prestige classes published in other DUNGEONS & DRAGONS products, the Epic Level Handbook couldn’t address the needs of every single epic-level character.
That’s where this web enhancement comes in. Here, you’ll find epic-level progressions for a full two dozen prestige classes drawn from various core D&D products: specifically, Defenders of the Faith, Manual of the Planes, Masters of the Wild, Song & Silence, Sword & Fist, and Tome & Blood. While this doesn’t encompass every prestige class presented to date (that would require an entire book all to itself!), it gives DMs a wide range of examples that should help them build other epic progressions as needed. Simply find a class (either here or in the Epic Level Handbook) that’s roughly similar to your chosen prestige class and start there.