Hi Neha,
Currently Oracle has released its latest version of
Weblogic 11g you can download the WLS 11/10/9 versions from the below link.
http://www.oracle.com/technology/software/products/ias/htdocs/wls_main.html
choose your platform [OS] and download the proper file.
Note: To download any package from Oracle you need a online oracle account which you can create free using following link.
http://www.oracle.com/admin/account/index.html
before download you need to provide the cred..