64-bit. Multilingual.

SolidWorks 2013 includes many enhancements and improvements, most in direct
response to customer requests. This release focuses on the following themes:

Automated functionality that you use most often
Improvements in performance and quality that speed up software operation and
create a more continuous workflow

New tools that greatly extend current SolidWorks design capabilities and
enable fundamental changes in your product development process

Extensive support for collaboration and connectivity that allows your design
teams to work on joint projects across the globe

http://www.solidworks.com/