'nuff said! See http://www.microsoft.com/isaserver/ for more information.
March 1 is the general availability date, but there's a trial CD available for order now. The trial download's currently scheduled for March 1.
I'm still learning about the cool new stuff in Enterprise Edition, but if there's something you're specifically interested in, please feel free to ask!
[Update] OK, so the question was asked about what was actually new and improved in ISA 2004 (next time, I'll just say "ask me in a week").
What's New And Different In Internet Security and Acceleration Server 2004 Enterprise Edition? And what does it mean?
More as I learn about it...
How about a run down of whats differnt compared to Standard Edition. I couldn't find a comparison on the MS site :)
Do you know if there is any upgrade path from ISA 2004 SE to ISA 2004 EE? Could the XML exports be used to accomplish this?
I think I've heard there is, but I need to check.
For me the coolest feature in ISA 2004 Enterprise has to be the BiDirectional Affinity!
Hugh: My information is that yes, you'll be able to migrate the ruleset from SE to EE via export/import.
are there any advantages to doing a frontend/backend with enterprise edition instead of standard, assuming no need for clustering? I am not the network kinda guy...
Not that I can think of offhand - from a networking perspective, EE adds BDA, which works around certain routing difficulties you used to hit when traversing NLB clusters, and that's the main advantage I'm aware of in the FE/BE scenario over Std.
If I find anything to change that opinion today (I have a case on Enterprise Edition, so get some time to put into it), I'll port about it.