Shouldn't Google acquire them already? It's surprising and quite unnatural to see other companies make faster emulators than Google themselves (which may not be because Google doesn't have the technical expertise to do it, but because they're not that seriously committed to doing that, and they think the current emulator is fast enough).
Yes, I wish they would, but if they really cared about boosting Android performance, picking up Myriad for their Dalvik Turbo would be a better choice. It's 2-3x faster[1] closing the huge performance gap between Google's JIT and Oracle's.[2]
Looking over the changelog from Android 2.2-4.3, there's no mention of performance tweaks to Dalvik. They even have the father of JIT, Lars Bak, working for them. But he's focused on the V8 JS engine and doesn't provide any assistance with Android.[3]
