Google released a developer preview of Android "L" Wednesday at their I/O conference. Is that developer preview on topic?
I would say they are on-topic. However...
- The universe of people who could know the answer is rather small. There may not be anybody here who can answer your question.
- It is a preview, so a lot of things are going to change. A problem you ask about today may get fixed in the released version, or even in a later review build. Stack Exchange is about the "long tail". That is, for the people who come after who have the same problem the Asker did. A question (and its answers) for a problem that no one can ever have any more is of no use.
- And, of course, developer (programming) questions are off-topic regardless of OS version.