Information from Dell Hypervisor Engineering team: "Dell customized 5.5 Update1 is planned to be released this month (~4/20 )".
Hello, I have downloaded the following from DELL website : VMware-VMvisor-Installer-5.5.0-1331820.x86_64-Dell_Customized_A02.iso (3/11/2014) But it's still the 5.5 version instead of the current 5.5 update 1 from VMWare (released on 3/11/2014 too). Does anybody have an idea about the release date of the DELL Custom ISO for VMWare 5.5 update 1 ? Regards, -- SK 
VMWare vSphere 5.5 Update 1 DELL Custom ISO - release date