This is interesting, but somwhat deceptive. IBM has created a framework, not an actual search engine. The framework is effectively a data layout combined with a processing pipeline and query engine that gives emphasis to semantic processing of information, rather than strictly textual. See IBM's FAQ regarding Annotations.

You still have to buy the software that will plug into the framework in order to actually process the information, though some open source projects are certain to come along.

This is interesting stuff, but not as thrilling as the article would suggest. Imagine if google open sourced their systems software, except the part that does the whole PageRank thing.