There is an interview with several FreeBSD developers on what's new in version 7.0
I have mixed feeling about FreeBSD - you look thru what's new and you got a feeling it's just catching up with other OS'es with no innovation on its own. IPMI support? 1:1 threading model? Journaling for a file system? - and not even "real" one... Maybe they did managed to get slightly better performance for a specific workloads but the question is - why would I need FreeBSD?
Then you have little ISV support - try to get Oracle libraries for FreeBSD.
In x86 market you even have already a big market share or you innovate to get one, you add some new value - frankly I can't find any added value in FreeBSD comparing to Solaris or Linux on x86. Sure, one can find some small niche where it makes sense, but in general one will be much more happy with Solaris or Linux.
Sadly (or maybe not?) FreeBSD is becoming more and more an OS for hobbyst - or maybe it has always been....