Turns out that Cyberpunk 2077: Phantom Liberty is hiding a little reference to The Witcher 3, and one that should be music to your ears.
Some mild, fairly early spoilers for Phantom Liberty ahead!
It just seems like CD Projekt Red can't help but reference itself. There's already a Witcher reference in Cyberpunk in the form of an arcade game called Roach Race, but that one's in the base game. However, as spotted by IGN, it seems that there's a brand new reference to be found in Phantom Liberty. It can be found after a certain point during the mission Lucretia My Reflection, when you're guided to a wall-mounted phone in an abandoned building, the main purpose of which is to get in contact with Solomon Reed.