Do you plan to release study guide for 1Z0-882 MySQL 5.6 Developer? I recommend you, because MySQL has much larger user base and that means more $$ for you.
I have a list of definite and potential exams that I plan to write guides for. I am currently working on one for 1Z0-460: Oracle Linux 6 Implementation Essentials and hope to release that in a couple of weeks. Then I have at least one (1Z0-054: Oracle Database 11g: Performance Tuning), and possibly two (second undetermined) that I want to do before I start on guides for the 12c exams (1Z0-060 and 1Z0-062).
When I saw that 1Z0-882 and 1Z0-883 were in beta, I added them to my list. However, I have no idea when (or if) I'll get to them. I can guarantee that it will not be this year. Next year... who knows. 1Z0-460 was not originally in my near-term list of guides to write. I switched from 1Z0-054 to it because I got an opportunity to take a boot camp for Oracle Linux 6 and decided to write that guide while the information was fresh in my memory. Because I don't have a contract with a publisher to write this book by that date... the actual order of the guides is fluid and gets determined weeks (or even days) in advance rather than months.