As you may have noticed in other posts, the results for the 71-510 beta exam are starting to show up on participant transcripts (on the MCP member site). If you took the test a couple of months back then you may be able see your results by now. I checked mine today to find out that I passed the exam.
Now that the beta results are starting to appear, the "live" exam will probably be available soon. If you're planning on taking the exam, here are a couple of links to help get you started: