It's not necessarily old news, however. For example, as far as I know most researches in this area still have difficulty in making something completely visible on all spectrums in a practical manner. Plus, it's harder to do with some objects than others.
'Space-Time Cloak' to Conceal Events
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Full article: http://www.sciencedaily.com/releases/2010/11/101115210937.htm
"ScienceDaily (Nov. 16, 2010) — The study, by researchers from Imperial College London, involves a new class of materials called metamaterials, which can be artificially engineered to distort light or sound waves. With conventional materials, light typically travels along a straight line, but with metamaterials, scientists can exploit a wealth of additional flexibility to create undetectable blind spots. By deflecting certain parts of the electromagnetic spectrum, an image can be altered or made to look like it has disappeared."