nginx-1.4.0 穩定版發布了，該版本包含 1.3 中的所有改進，其中不少都是新特性，包括支持 WebSocket 連接的反向代理、OCSP stapling, SPDY 模塊, gunzip filter 等等，下載地址：
Nginx 1.4.0 在 1.3.16 的基礎上修復了兩個 bug：
*) Bugfix: nginx could not be built with the ngx_http_perl_module if the
--with-openssl option was used; the bug had appeared in 1.3.16.
*) Bugfix: in a request body handling in the ngx_http_perl_module; the
bug had appeared in 1.3.9.