A large, three-chapter extract from Brandon Sanderson's The Way of Kings is now up at Tor's website and is worth a look. The book is published on 31 August in the USA and in February 2011 in the UK. Note you have to be a registered member of Tor.com, but registration is free.
Elsewhere, I am informed that Steven Erikson is two and a half chapters from completing The Crippled God, the quasi-final Malazan novel. Erikson writes pretty big chapters, so that's not a trivial amount left to write, but the end is definitely within sight. The novel is currently slated for publication in January 2011 in the UK and possibly a little later in the USA.