Haven't loaded up the PTR and gone to check out Ulduar for yourself yet? The good news is you've got lots of ways to see it online -- in map form. Reader Evan B sent us the version in the picture to the right (click it for the full version, and it's big) -- he cut and pasted together the in-game map screenshots to make up a to-scale version of what the instance looks like. Our friend Stompalina also has a version, cut together from what looks like the minimap ingame, so you can get a little clearer idea of what the textures look like in each section of the instance.
And StratFu sent us an interactive map of the Titan city, with hover-over tooltips on each boss and click-through information for what we'll face inside. Strategies are still being fleshed out completely (and remember, this is the PTR, so everything is subject to change). But if you're looking for as much info as possible on what's waiting for you inside the brand new raid of Ulduar in patch 3.1, there's lots of places for you to find it.