Special World (www.specialworld.net) is a very popular and authoritative site with teachers anxious to keep abreast of new thinking in the area of assistive technology and special needs education in general. The site is continually updated to reflect new insights and opinion from all over the world.
UKEdChat (http://ukedchat.com) is a site offering fantastic resources for teachers interested in integrating technology. You can sign up for free updates to their digital magazine and links. You can also access the magazines directly here: https://issuu.com/ukedchat
Microsoft have recently revamped their online site to support teachers. It offers great free resources for teaching and has a genuine community feel about it. Registration is simple and free. https://education.microsoft.com/