MSN has stated that their new search engine algorithm will most likely not coincide with their new look SERP in July. Clearly this contradicts what was recently stated by Reuters.

It would make sense that MSN is in no rush to bring out it's own search results. Most of the money search engines make comes from the paid ads. With the beating Yahoo! has been taking it is in question whether or not MSN will even offer a paid inclusion program.

The longer they wait before they put out MSN Search technology, the more they can refine it before it comes out. Having the luxury to be able to build a search engine behind the scenes means that few people will be specificially targeting their algorithm with spam. Once it's released they can't go back, and it is not in their best interest to let people know when the switch will happen.