It looks like Apple are going to use their iPad mini event on October 23 to unveil a new member of the MacBook Pro family. We've alreayd got the 15-inch Retina MacBook Pro, which will be joined by a 13-inch model.
This is according to a report by 9to5Mac who cites a "consistently reliable source at a high-profile U.S. retailer." The new 13-inch Retina MacBook Pro would be thinner and lighter, like its bigger brother and will come in two configurations.
These two configurations will consist of two processor and storage options, and should be made available for purchase shortly after they're introduced on October 23. The new 13-inch Retina MacBook Pro will be priced higher than the non-Retina model, which was to be expected, but as for exact pricing that is unknown at the moment.