The release candidate published last week has been poked, prodded, and otherwise fully tested and has been retitled sans "beta". Those users who have already applied the release candidate version of this patch need to take no additional action as the update has not changed since.
The reason for the lengthy patch release was due largely in part to an issues players were experiencing where they couldn't make Elite Mode characters. This problem has been fixed and is listed in the compendium that is the Single Player Patch 1.2 notes, available here. The patch can be downloaded from the same link or by loading up Hellgate: London and clicking the Update Available button. Clicking the Details button under Single Player yields the patch notes, clicking Update will apply the patch.
Many thanks to those Hellgaters who helped out by testing preliminary Single Player Patch 1.2 versions!
Hellgate: London Team