According to Twitter, SKZB finished the first draft of Hawk on May 20, 2013.
According to SKZB's Reddit AMA, Hawk is tentatively scheduled for Fall 2014.2
According to SKZB's website and Patrick Nielsen Hayden, Hawk is officially scheduled for September 2014.
SKZB posted the first page of Hawk in a comment on his blog...4 in alphabetical order.Book launched on 7 October, 2014. On the 8th, Corwin Brust published this 35-minute reading of the first chapters by SKZB himself.