The new TTartisan 50mm f/0.95 lens for Leica M-mount is now in stock at B&H. Amazon has the lens listed with the earliest delivery by October 1-6. Readers outside the US can purchase the TTartisan 50mm f/0.95 lens directly from the PR online store with free international shipping (delivery takes up to two weeks depending on your location). Additional coverage of the new TTartisan 50mm f/0.95 lens can be found here.
TTartisan 50mm f/0.95 vs. Leica Noctilux 50mm f/0.95 Leica M-mount lens comparison
TTartisan 50mm f/0.95 vs. Leica Noctilux 50mm f/0.95 lens comparison (part 2)