This 14 August 2018 video from the Netherlands says about itself:
On May 17, Young Rembrandt Studio opened its doors in a very special location. Langebrug 89 is the cosy 17th century dwelling where Rembrandt received his first painting lessons from his mentor, Jacob van Swanenburg. This listed building now houses a unique stop in the “Footsteps of the Young Rembrandt” walking tour through the city of Leiden.
Translated from Dutch NOS TV today:
For the second time in a short time a painting by Rembrandt van Rijn has been discovered. According to the Leidsch Dagblad daily, the work is currently being restored and will then be exhibited at the De Lakenhal museum in Leiden.
Ancient Art Curator Christiaan Vogelaar of the museum says in the newspaper that the painting was discovered abroad. He does not want to reveal more about it yet. “We first have to make sure that it will have been restored in time, so that there will be enough time for research into the work, but I can not say more about it”, says Vogelaar. …
The Lakenhal will exhibit the painting as the first museum in the world, in the exhibition Young Rembrandt. In that exhibition, which will open on 3 November 2019, there are about 40 paintings, 120 etchings and 20 drawings by the Leiden-born artist and his contemporaries.