As per the official announcement, CubeCart 5.2.0 Beta 1 Released has been released.
Key points from the release thread:
Product Option Stock Levels & SKU's - A matrix of all possible product options is dynamically generated creating a table to specify stock level and stock codes. Unlike many of our competitor solutions there is NO limit on the amount of option categories!
"Code Snippets" with import tool - This allows code to be added without building a complete plugin and the import tool allows for easy install/update.
New "All In One Shipping" Module - This was a very popular add on for v4 allowing very flexible shipping calculations based on price and weight ranges (etc) with zones from country to partial zip/post code.
New FedEx Shipping Module
Bulk product deletion
Custom display ordering of payment gateways & alternate checkouts
Custom catalog product listing order
Ability to select which payment options are for mobile commerce vs standard ecommerce
Miscellaneous bug fixes
Since this is an extensive update, I have setup a separate CubeCart 5 Beta Demo using this latest version for you all to test out.
If you would also like access to the admin side of the demo, please feel free to contact me to obtain access details.
Due to this being a beta release, upgrading is not recommended for live CC5 stores.
However, if you decide to upgrade anyway and require assistance, please order a CubeCart Upgrade.
If you have any questions relating to upgrading or want to to try this version out for yourself, please contact me.