This is a relatively good version. I suggest that you upgrade unless you’re completely happy with your current version. Updating just means uploading the new theme directory (/atahualpa351/) into /wp-content/themes/ so that you end up with /wp-content/themes/atahualpa351. Then choose the new theme (version) at WP Admin -> Appearance -> Themes.
This version has smooth animation for the page and category menu bars, and a new default style in addition to the existing new styles.Discuss this release at the forum
P.S.: The menu bar animation doesn’t display properly in IE, at least in certain cases. It will be fully browser compatible in the next Atahualpa version. Note: This animation is not turned on by default. See Atahualpa Theme Options.
How to import other styles: There are several additional styles in /atahualpa/styles/ such as “ata-round.txt” etc… You can start using these new styles by importing these style files into Atahualpa, see Atahualpa Theme Options.