ArcGIS for AutoCAD Build 300 Service Pack 1 offers faster loading and introduces support for AutoCAD 2013 (64-bit and 32-bit).
Proxy servers connecting to the internet
for ArcGIS services is now supported. SQL server authentication in
combination with support for Windows token authentication/proxy server is also available.
In addition, language options including Chinese, French, German, Italian, Japanese, Portuguese (Brazil), Russian, and Spanish are now available.