The Firefox 1.0 Preview Release was announced earlier this week. It now includes an integrated RSS reader, among other features.
Now that Firefox and Mozilla are gaining in popularity, the hackers are poring over the code with a fine-toothed comb, looking for vulnerabilities, a big pile of which were announced earlier this week at Secunia. Upgrade now if you are not using 1.0.
The upgrade from 0.8 went very smoothly. Firefox checked each of my extensions (as previously blogged here) for compatibility, found some updates, and installed them. Looking good!