It's still in the early stages I'm afraid, but we finally acquired a dedicated developer to work on it. He's currently doing a great job assessing Kirill's initial implementation, figuring out where we need to go on from here. The current estimate is another 2 months and jME can boast itself with complete Android compatibility.
Unfortunately the only way to experiment with jme-android at this point would be to dig into the source and basically 'figure it out' The strictly jME3 related docs are coming along nicely though, and with lots more to follow as we take take the grand step into first alpha any day now. If you have time, I'd strongly recommend taking 2 months to get closely affiliated with jME3, and by then hopefully you'll have some stable Android features to develop with.