There's also V4NO's excellent work without any of the associated bethesda original problems, including Krist2 and Hionimi's work http://www.gamesas.com/topic/1346421-relz-bethesdas-hi-res-dlc-optimization/
Installable as loose files or BSAs.
Personally if I was going to use them just now I would use the loose variety, until we get good work arounds for the following problems anyway http://www.gamesas.com/topic/1345724-important-bsas-and-you/
And of course gamesas will probably get around to updating the DLC BSAs and repacking them properly this time ( instead of relying on the guy they pulled off the streets after thanksgiving to pack the first ones resulting in the mess which Brumbek discovered in there http://www.gamesas.com/topic/1343691-info-detailed-anolysis-of-highres-pack-click-to-learn/ - Could have done a better job of packing the BSAs myself

).