It looks legit. I mean it’s impossible to tell because the from address could be spoofed but the links go to Apple’s website and nothing asks me to sign in.
I just searched my email and apparently this is the forth “Meet your new iMac” email I’ve received. I get so much junk mail that I guess I overlooked it. Apple has sent me one every three months. Maybe my iMac has been phoning home to Apple saying it’s being neglected and ignored 😂😂😂