In a bit of news on the oft rumored tablet product, 9to5Mac.com has learned that sometime last year, Apple transferred the "TabletMac" trademark from the company Axitron who makes Modbooks out of MacBooks.  

However it may not necessarily mean a whole lot in terms of the tablet's actual release.  More or less, Apple prefers to keep a close lid on their trademarks.  They previously had developer iPodRip change its name to iRip as apparently Apple owns the "Pod" name.

More than likely the tablet software will be based on that of the iPod's OS software.  So, for now, it's being assumed that Apple wanted to protect the TabletMac name to clear up any confusion over their Mac brand.