It’s been more than 1,900 years since the Jewish people have slaughtered a Passover lamb within the walls of Jerusalem. But this one still doesn’t “count” because it’s not on the Temple Mount. From The Times of Israel:

An annual reenactment of the sacrifice for the upcoming Passover festival will be held for the first time inside the walls of the Old City of Jerusalem.
The High Court of Justice on Monday upheld a police decision to bar a group of Temple Mount activists from holding their annual ceremony at Davidson Park, an archaeological site adjacent to the Western Wall on the southern side of the Temple Mount complex.
But in an unusual move, police on Wednesday said the activists would be allowed go ahead with the reenactment on Thursday in the main square of the Jewish Quarter of the Old City.
[…]
Just like the Passover sacrifice that was offered in the time of the Temple, it will include slaughtering a lamb, flaying it in the traditional manner, throwing its blood on a model altar, and roasting and eating it.

The full article has more details including the time of the event.