When the HTC EVO was released in early June, people were able to turn off its preloaded Sense UI and use the standard Android home launcher instead. A software update (version 1.47.651.1) pushed out a few weeks later made the stock launcher unavailable and unfortunately for Sense-haters, Froyo didn't bring the function back. This was disappointing to many users because one of Froyo's many new features was a new home screen dock.
ADW.Launcher makes it possible to get that dock on your EVO, even if it's still running Eclair, but since a substitute isn't as good as the real thing, you can now get the real dock along with some other stock goodies from xda-developers forum member superevilllama. Along with Android 2.2's native launcher—the one seen here—you also get the stock app drawer/menu and the stock wallpapers.
Simply download the .apk file and install it using a file manager like ASTRO. The next time you hit the Home button, a pop-up menu with HTC Sense and Launcher (and any other home screen replacement apps you may have previously installed) will appear. Choose Launcher and press the "Use by default for this action" checkbox if you want to use it as your default launcher.
One thing to note, however, is that the permanent phone icon may not work correctly. On my EVO, for example, tapping the icon brings up a "Application is not installed on your phone" message, which is obviously not true. Easy, though not ideal, workarounds are to add a phone app shortcut or a direct dial shortcut to your home screen. Not all users seem to have this problem, though, so your mileage may vary.
Personally, I think ADW.Launcher is a better solution for getting the Froyo launcher because although you don't get the stock app drawer/menu, it's more customizable and you can change the phone and browser icons. For those who don't like home replacement apps, though, the stock 2.2 launcher can be found here.