Those who've liked Firefox for Android but have been clamoring for a native version can rest easy, as there's now a truly optimized version waiting for you in Google Play. Mozilla's new Firefox 14.0 beta now looks like, and importantly runs like, a full member of the Android family. Making the leap also affords it Flash support, a new starting page with top sites, secure Google searches and a slew of load time and responsiveness upgrades over the creakier, XUL-based version. Beta status should still trigger a moment of pause if you're not ready to accept a few bugs, but if you've got Android 2.2 or later, you're welcome to give Firefox a shot.
Source: http://www.mozilla.org/en-US/mobile/14.0beta/releasenotes/