I know in National Book Store in SM, there are book anthologies of the past Palanca Award winners from the 1980s to present for sale there.
Another resource is the Cebuano Studies Center in the University of San Carlos where they collect works of Bisayan writers.
On the Internet, you can view the regional winners of the 2006 to 2008 Palanca awards and their works. Just check out the
Literary Works Link on the side menu.
Another good site to view Visayan contemporary literature is the
Bisaya magazine site where you can read mga sugilanon, balak, gumalaysay at nobela.
Hope these help.