Today HP released a new Service Pack for ProLiant (SPP): Version 2012.06.0(B). The SPP is a DVD image that includes the latest firmwares and drivers for all ProLiant servers (and associated components like Blade enclosures, iLO boards, NICs, CNAs and Smart Array controllers). Also included is the HP Smart Update Manager (updated to version 5.1.0) that you can use either on a Windows OS or by booting a ProLiant server off the DVD into Linux.
At the same time HP also published updates for their customized ESXi (4.1 U2 and 5.0 U1) installation CDs that include updated Offline bundles and updated drivers (both are also separately available).
Last but not least a new Virtual Connect firmware (version 3.60) hits the street today.
You can find download links to all the mentioned components on my HP & VMware Links page.