The security changes are small but nevertheless could have a positive effect on your browser's security. Chrome 14 dev supports DNSSEC authentication for HTTPS, which strengthens the secure Web protocol, and Chrome 14 dev for Macs fixes invalid server certificate errors that were being generated for some secure sites that had untrusted roots certificate authorities. The Chrome Web Store now prompts with a native confirmation dialog box when installing a Web app, which streamlines how the Web store appears to integrate with your computer. SSL v3 server connectivity issues have been fixed, which will prevent some connections from being lost.
Google is taking HTTPS issues quite seriously and has taken steps to address mixed secure site scripting conditions in Chrome 14 dev. Just after announcing that Gmail will always load in HTTPS, the company has ensured that mixed secure site scripting conditions are blocked by default in Chrome 14 dev. The first is a command line flag that actually landed in Chrome 13 dev called --no-running-insecure-content for advanced users who want to help clean up sites with mixed secure scripts. Another flag is available that will block the display of insecure content, --no-displaying-insecure-content, but Google stated in the above-linked blog post that it will not block displaying insecure content by default since it's not as dangerous a use-case.
And in a hat-tip to the users and site administrators who may not have the resources to address the issue immediately, Google has included an inverse flag: --allow-running-insecure-content.
Also, Linux users get a makeshift multiple profile support button for creating different browsing profiles from within the browser.
There are some known bugs with Chrome 14 dev, including nonfunctioning keyboard volume controls within the browser and a browser crash related to reloading a site via HTTP Post, which most often appears as the confirmation page following a form submission from an online transaction.
Along with bumping Chrome dev to version 14, Google has moved its beta channel to Chrome 13. Chrome 13 beta (download for Windows | Mac | Linux) makes two notable changes to the browser. The first is the addition of pre-rendering technology that will make some Google search results appear "almost instantly," according to Google's Chrome blog. Since pre-rendering is a Web standard, it's not limited to Google and can be used by other Web developers. The second is a fix for a bug that's been annoying Chrome users since 2008: the lack of a print preview. Still no word on default support for RSS feeds, which requires users to install an add-on before it will work in Chrome.