The UltraChrome inks don't include the LLK ink.
The UltraChrome K3 uses the same K, LK, LLK in the x800-x900 printers but the x880 and up have the vivid magenta/vivid light magenta (and the orange/green inks in the 10 ink printers—but I think they use HDR for the x990 printers with original K3 inks)
The New UltraChrome HDR have some new Black ink in the P-series printer, but It doesn't say anywhere if the LK/LLK inks are different or just the PK and MK. I can make a few tests next week with a 9900 and the P800 and measure the differences between the LK and LLK inks.