High Availability Enhydra

I am very interested in suggestions anyone might have as to highly
available / fault tolerant implementations of Enhydra.  In the past,
before the demise of what was formerly known as Lutris, there was a J2EE
based version of Enhydra (EAS) that shared session information between
servers, preventing single point of failure at the application server. 
What happened to this product?  Will any of these features ever make it
into the public releases?

Has anyone tried implementing Enhydra with SteelEye's LifeKeeper product
or the LinuxHA Heartbeat?

TIA,

-Matt Howell
mhowell@xxxxxxxxxxxxxx