Just to be clear, Vulkan is a Khronos initiative, not AMD. But it's cool, and we are members of the consortium. AMD is all about industry/open standards.
As for upcoming hardware announcements, you know I can't say anything official. But widely discussed is the upcoming Carrizo release, which our CEO said would happen in Q2. We presented a talk at the ISSC last week. The actual presentation slides are here
And some of the "buzz" on the web here:
Same problem for me, I don't know how to reach marketing.
I try to reach AMD marketing to ask them if they can come physically to my company site to present some of AMD products.