Re: Good news for android?
No, there is no great hope for Android on tablets. :)
The reason isn't just Devs focusing on where the greatest paid-for app revenues are found (iOS), or even the cheep n cheerful kids n TV nature of most Android tablets. The reason is Google's own Chrome OS. Or possibly Google's Fuscia OS in the future (details of Google plans are scarce).
Regardless, Chrome OS receives its updates directly from Google, not device vendors. It can run Android apps. It's often found on laptop and convertable big screened devices, so is a better starting point for using keyboards than Android.