Perfect Dark isn't perfect, as Rare and company have released an update for the XBLA port. Although the update includes a host of tweaks, the biggest change is the addition of several control options. Chief among these is the (blessed) option to lock the targeting reticle in the center of the screen.
Southpaw and legacy control options have been added as well. Beyond that, there are some Achievement fixes and a few tweaks to help match the original N64 experience. The update has also been incorporated into the trial version, so those turned off by the initial control options are able to test out the new tweaks.
Find a full list of changes after the break.