First of all, you may want to rename your topic to [Release] instead of [Realase]
Second, I really like the first one, though for the logo the light source is inconsistent and confuses the eyes a little. Maybe horizontally flip the top or bottom half (above or below the griffins) so that the light source seems to be coming from either the left or the right.
Thirdly, the new style looks really nice at 1280 width, but when I shrink my window smaller it breaks down fast and easy. At least for the header, make the griffins PNGs with transparent backgrounds so that when you resize, if the griffins overlap the center graphic they'll overlap smoothly without causing too much of a graphical ruckus. And of course modify the rest of the header to be resizable, which should be pretty easy (at least if you were designing a normal page, not sure how that translates for phpbb).
But all in all, I really like the look and I think you're doing a great job. So keep it up!