I have been looking a lot at SOA recently. Isn't CORBA exactly the same thing as SOA?
SOA as a concept has been around for years, but was only more recently named as such. There are many technologies that can be said to implement SOA - either completely, or aspects of it. CORBA could be said to be one of them, although the term wasn't around when CORBA was created.
CORBA certainly implements are large part of the SOA surface area, but I don't think you could say it does so completely (whatever that means). SOA can be a bit vague.