These are just minor questions and comments, but its the little things that makes a product truly shine.

In the index of existing Birthright products, the magazine articles are listed as being "Unofficial" in parenthesis. This seems incorrect, since the the various Dungeons & Dragons magazines were, and remain, 100% official material, for Birthright and everything else. Furthermore, none of the Birthright dungeon material appears in the magazine list. This strikes me as a curious exclusion, since I know there was at least one ("Seeking Bloodsilver").

I'm also curious about the d20 Birthright team's stance on 3.5E and d20 Birthright. I personally hope that they'll endeavor to upgrade d20 Birthright to 3.5E, especially considering the revised edition will have its changes posted for free in the SRD, and this document is still only a playtest one, and would be due for a revision anyway.

I'm also slightly curious about some of those unpublished materials. While some of them have been made available via WotC on their website, is there a way to find out more, or possibly even see, the others? Some of them look very compelling indeed.