As mentioned earlier, CS5 doesn’t ship with the optional plug-ins that were bundled with CS4. But now, Adobe has posted CS5-compatible versions for free download. Picture Package (formerly ContactSheet II), PatternMaker, PhotomergeUI, Web Photo Gallery, Script for Layer Comps to Web Photo Gallery, Texture presets for Texturizer, TWAIN, a few additional formats and some other odds and ends. You can download the whole package here.