I think granite and stainless steel are pretty classic looks, so I'm not thinking they will be on their way out any time soon. I wouldn't replace my stainless with anything, and the same goes for my granite.
I think a big trend that I am seeing is mudroom lockers/cabinets. Our mudroom has lockers with benches and the works and it is seven years old. When we built, it wasn't an unusual custom touch, but it wasn't huge either. I think mudroom lockers/storage have become a must-have for many families. I would never own a home without them.
I'm also big on a huge island in the kitchen. Ours is very large, but it is also the workcenter of the house. Homework is done there. Meals are prepared and eaten there. There are bookshelves on the ends, so cookbooks are housed there as well. Overall, an kitchen without a decent size island is pretty useless to me. Of course, I have three fairly young kids. Ask me again when my husband and I are empty-nesters.