Palm's latest upgrade to its mobile operating system as well as its second franchise smartphone are both available today, joining the flurry of key releases in the wireless sector aimed at the holiday season.

The Pixi, the entry-level, smaller sibling of the Palm (NASDAQ: PALM) Pre, is on sale today for $99.99 and available through carrier partner Sprint, marking Palm's next step in nurturing its fledgling webOS ecosystem.

Also available today is the over-the-air update for to webOS 1.3.1, which integrates users' account information from Yahoo (NASDAQ: YHOO), Outlook, Facebook, Google (NASDAQ: GOOG) and LinkedIn with Palm Synergy, the feature that streamlines all of a user's accounts into one view.

The upgrade also includes some e-mail features, such as improved formatting in forwarded messages, new shortcuts for common tasks and the ability to forward and copy individual text and instant messages, said Jon Zilber, online communications director for Palm, in a blog post.

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