Known for their quality aluminum cases rather than power supplies, today Lian Li announced two SFX-L power supplies, the Gold-rated 550W PE-550 and the Platinum-rated 750W PE-750.
There is basically no information on these units available other than what's listed on Lian Li's website. They both share grill designs, what appears to be the same slim 120mm fan as the SilverStone SX500-LG, full modularity, and relatively short flat ribbon cables. Also, to avoid any confusion, despite the tagline in the marketing image these units are SFX-L, not SFX. The listings for both units mention that the fan voltage varies with both temperature and load, but it makes no mention of semi-passive functionality so it's likely these units have always-on fans.
Read more here.