Spring promises tons of new HDTV introductions as just about every TV maker rolls out its 2008 model line. We generally see the entry-level models hit stores during the spring, with more-expensive step-up models following during the summer and into fall in preparation for--you guessed it--the 2008 holiday season. But all of that is thankfully a long way off, and in the meantime there's plenty of new gear on tap to interest prospective HDTV shoppers. A word to the wise: If you can stand to buy slightly older technology, stores are in the process of selling off the remaining 2007 inventory, often at healthy discounts.