Dark Stains
Near black and espresso browns will remain popular, while other colors such as reds will remain less so. Check out the Ebony Oak by Naturally Aged Flooring for a stunning look: http://olympichardwood.com/EbonyOak-4617-img.aspx
Greys and White Washes
Along with the trend towards extreme dark finishes, white washes and greys will be even more popular. Antique White by DuChateau is a great example: http://olympichardwood.com/AntiqueWhite-5636-img.aspx
Patterns
Cheaper parquets are going to give your room a dated look. However patterns will remain popular like herringbone such as Vienna Chevron, http://olympichardwood.com/ViennaChevron-3509-img.aspx
Plank Size
Wider planks will remain popular, but mixed sizes are gaining even more popularity. Wide and narrow mixed together create a great natural and rustic look. Le Salle by California Classics is a great example: http://olympichardwood.com/LeSalle-2223-img.aspx
Texture
The textured flooring trend will continue, smooth and flat finishes will be less popular. Wire brushed and machine scraped floors are going to be very sought after. Dark Chocolate by Bausen is a great product that combines a variety of trends, machine scraped, dark and wide planks see it here: http://olympichardwood.com/DarkChocolate-2134-img.aspx