A rumor stating that a new thinner and lighter verion of iPad will be launched in March is spreading. The original report was released in Japanese blog.
(http://the-gadgeteer.com/wp-content/uploads/2012/11/ipad-mini-review-1.jpg)
credit: the-gargeteer
A more lighter fifth generation iPad that shares most features with the current iPad-mini is also expected to come with Retina display. Response from Apple will clarify these rumors.