Game generated ItemStrings no longer include the '0' place holders in the string parameter list between the ';' separators.
Game generated ItemStrings for links have a minimum of 16 parameters.
API GetItemInfo now returns the icon return value as a texture id, type number, instead of a specific path string. The number is still used in controls exactly the same way, and will load an icon without any alterations. Likewise icons are still loadable via the old path strings verbatim.
The arguments of API QueryAuctionItems has changed. The order of arguments has changed, and filters has been merged into a filterData structure.