Orion service module

I see they have put out a press release about fitting the first test heat
shield to the capsule, and in that release they mention the service module.
I've heard little about this piece of hardware recently and wondered what
was being launched on this unmanned test. Is it just a dummy, or is it too,
now built and under test?
Description of the heat shield seem very familiar to me, having been
around during Apollo!
Just bigger!
Brian

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