Date means nothing if the source is not reliable. My source is Intel, the designer of Light Peak. Yours is just a random article in the Internet with no reliable proofs supporting it.
Why did Intel say late 2011/2012 if they knew it's going to be ready in early 2011? Usually companies are very happy to announce that something is shipping earlier than expected but so far we haven't seen an official statement from Intel that says early 2011.
Don't believe everything you read in the Internet. Of course it's possible that LP comes in early 2011 but so far the official schedule is late 2011/2012.
Intel also said
Light Peak components are expected to begin to become available to customers in late 2010, and Intel expects to see Light Peak in PCs and peripherals in 2011.
http://techresearch.intel.com/ProjectDetails.aspx?Id=143