I'll definitely be picking this one up.
I love the Universal Horror movies and own the coffin box already, but I'll double-dip for a collection of nice looking steelbooks.
I'd imagine that all the ones from the set will get a release but the UK has been pretty poor when it comes to a lot of the sequels (most didn't get a DVD release) and some were released by other companies rather than Universal themselves.
I'm tempted by the forthcoming US DVD set too as it's a lot more complete and compact than what I own now.