Have you visited Axistive?
Axistive (http://www.axistive.com) is a "news portal for assistive technology, providing a wide range of free services including product reviews, industry news, market trends, workshops, downloads, and product and organization information." They aim to provide "free, accessible and objective information on assistive technology products, organizations and services; stimulate global innovation of easy access technologies; and create market transparency and awareness of assistive technology products and services."