When I got my SR1 the second stage was attached to the first, but nothing else came with it (attached or otherwise), which was what I expected.
I then had to disassemble it to put my Miflex hose on to the second stage, and then attach BCD inflator and SPG.
I then had to disassemble it to put my Miflex hose on to the second stage, and then attach BCD inflator and SPG.