You beat me to it! I was just about to post about the new Kindle Fire HD, as I just found out. I guess it's becoming old news at this point though..
You absolutely can play games on the kindle, and yes it runs on android.
And what's more:
" Powerful HD Processor
Could be good for Scirra :)
" The Greatest HD Games
Kindle Fire HD is built for the best in gaming, with full tilt, turn, and multi-touch controls...
Up Your Game with GameCircle
Earn achievements, compare scores with GameCircle and Facebook friends, or take on the world with global leaderboards. GameCircle titles with Whispersync automatically store your progress in the cloud, so you'll never lose an unlocked level or saved game, even if you delete it from your device. "
I wonder what is involved with activating this Whispersync..
"...games, and music that you buy for your Kindle Fire HD can also be enjoyed on Amazon apps for Windows, Mac, Android, iOS, game consoles, TVs and more."
Anyways, all of this is coming from info you can find directly at amazon.com, so check it out!
It doesn't appear that Silk, Amazon's own browser (who knew?) supports WebGL.. :(