The days of Citrix Secure Gateway are over for sure but customer get a better and free solution! Citrix changed the licensing for Access Gateway in a way that ICA Proxy connection through the Gateway are free. In addition you can download the VPX version of Access Gateway Express and simply import it into XenServer. A VMware/Hyper-V version is expected to be relased soon and therfore is the end of Secure Gateway.

Also soon to be realeased the Citrix licensing server applicance! That is great I just wish Citrix would have combind it with other componentce like Merchandising Server

Don't miss the latest releases of XenServer 5.6 (very cool stuff) and Provisioning Services 5.6 where you can actually stream XenServer!