For those already using Adobe Muse for wireframes and prototypes, the newest Beta version 6 is now available, and a note on the website warns that all older beta versions will expire on March 15, 2012. Changes made to the installer in the new version means that the in-product installer will not function as it has in the past.

For those of you who might have been waiting on a slightly more mature version of Muse, below are some of the changes and features highlighted in the Muse blog yesterday.

In addition to the aforementioned changes to the installer/updater mechanism:

  • Auto scroll support: When an item is dragged to the edge of the view the view will automatically scroll in that direction.
  • Cached versions: They’ve changed how Muse generates references to CSS, JavaScript and Favicon files in the generated HTML so that obsolete versions of files won’t be used when you update your site and view it in your browser.
  • Ability to adjust the amount of data stored in your image files. “If you place a lot of images and use them at a small size, you can shrink the size of your Muse file and decrease the time to export/publish your site by choosing to ‘Optimize Asset Size’ on your images in the Assets palette.”
  • Keeps the same HTML Element ids from one export/publish to the next.

There is a much more granular list of changes and feature updates in the blog post. Here is the download link to Muse Beta 6 in both Windows and Mac versions.

If you’re new to Muse, here is a very detailed review of what it’s all about and how to use it from CNET’s Lori Grunin, based on the initial beta: “Adobe Muse: Creating sites out of thin AIR.”

The beta is freely available until the 1.0 version (due sometime this year), and afterward will be available by subscription only, so now’s the time to take it for a spin if you think you might be interested.