Last year Stefan Daniel (Leica Executive Vice President of Technology and Operations) spoke to members of the Leica Society International in Dublin and mentioned that a new Leica mirrorless medium format camera is scheduled for production in 2025:
Considering the above and the fact that I have not received a single rumor about a possible new Leica S4, I think it is safe to assume that a new Leica mirrorless medium format camera will be coming in the future.
Venus Optics offers several lenses for Leica M-mount but many readers do not know that all Laowa lenses except the 12-24mm f/5.6 zoom are rangefinder-coupled and can be used on a rangefinder – see the product listing at B&H and on the official Venus Optics website:
The lens profile is so low (less than a centimeter) that a Leica M camera with a Brightin Star 28mm f/2.8 lens attached can easily fit in a fanny pack:
Pancake lens with variable aperture (10 aperture blades) – the lens reminds me of some of the MS Optical lenses by Mr. Miyazaki (but at a significantly lower price)
Leica Japan issued a notice that Leica Q3 orders have far exceeded expectations and deliveries could take some time:
[Important] Notice of “Leica Q3” supply status
Thank you for using the Leica Online Store.
We are currently receiving orders for the Leica Q3 that far exceed our expectations worldwide, so it is taking some time to deliver. We apologize for the inconvenience caused to our customers.
We will deliver the products one by one, but it is expected that you will have to wait for a long time. Please understand that it is difficult to give an answer at this time regarding the delivery time.
Customers who have made a reservation will receive an email from the Leica Online Store with instructions on how to purchase the product as soon as the product is ready.
We are very sorry to have kept you waiting for the product, but we ask that you please wait until we inform you.
In addition, we cannot answer inquiries about products reserved at the online store.
Please contact the online store.
Thank you very much.
In the US the situation is similar – currently, Leica Q3 pre-orders placed on the day of the announcement are being shipped.