CeBIT is one of the worlds largest IT fairs and is held every year in Hannover, Germany. The fair will be landing in Manhattan this summer and though it won't be quite as large, Hannover Fairs USA hope for a good turn out.
The fair will run from the 18th of June until the 20th with conferences starting on the 17th. Companies such as 3Com, HP and Sun Microsystems are expected to exhibit there. The TechXNY fair, usually in June, has been pushed back to September. http://www.nandotimes.com/technology/story/887791p-6185958c.html