Here is a copy of the Leica UK email ... (I already have my Q3):
'Dear Customer,
We hope you are well and eagerly awaiting the Q3 to come back in stock. We're happy to inform you that the camera will be back in stock on our website Tuesday, 20th of June 2023, at 14:00 GMT.
We are anticipating a very high amount of traffic on the website. To maximise your chances, please visit our website at least 5 minutes before the mentioned time, making sure you are logged in (if you don't have an account yet, we suggest registering beforehand to save time at checkout), and have your credit card or preferred payment method ready to hand. Refresh the website, and we hope you will be one of the lucky owners of a new Leica Q3.
Here is the link to the product page: https://leica-camera.com/en-GB/photography/cameras/q/q3-black/shop-now
To create an account, please follow this link: https://store.leica-camera.com/uk/en/account
Please let us know if you have any questions. We will be happy to assist.