Dynamics AX 4.0 Service Pack 1 ships
Dynamics AX 4.0 Service Pack 1 release is available on Customer Source and Partner Source using these links:
CS – https://mbs.microsoft.com/customersource/support/downloads/servicepacks/ax40sp1_download.htm
PS – https://mbs.microsoft.com/partnersource/downloads/servicepack/ax40sp1_download.htm