Some peoples (production) would be pleased to know that fire0, air0 & water0 have been updated. All security fix are applied as soon as they are available, but mainstream patchs can be delayed a bit before getting into productions servers.
About research & development, earth0, fire1, fire2, air2, air3, air4 will be deployed next week. The interconnect is currently Ethernet-100Mbps, but there is some plan to change that to Ethernet-1000bps & infiniband. Those server are for dev ; so they better be fun ;-).