UPDATE 12/12/19: Here's our first look at Capcom's sneaky Resident Evil 3 Easter egg, due to be added very soon to Resident Evil 2.
This relates, of course, to the Resi 2 Steam achievement which was unhidden yesterday. It unlocks when you find a letter from Resi 3 protagonist Jill Valentine.
Now, the game's Xbox One version has added the achievement as well (thanks, Xbox Achievements) - and with it, a screenshot of the scene it looks like you'll get when you pick up Jill's note. Resi fans will recognise Jill and Robert Kendo having a little chat: