Hasselblad recently launched a dedicated website for the camera, which was first announced at last year's photokina show in Germany.
Last month, a Hasselblad spokesperson said that the Lunar would be officially launched in April.
It had initially been planned to receive its debut in the first three months of 2013.
Hasselblad has since told AP that the Lunar is ‘scheduled' for June availability, but its spokesperson did not give a reason for the later launch date.
The Lunar is a 24.3-million-pixel, APS-C-format, CSC aimed at enthusiasts – produced in a tie-up with Sony.
Boasting technology borrowed from the Sony NEX-7, it is expected to feature a 2.4-million-dot OLED EVF and 3in (921,000-dot resolution) LCD screen.
The Lunar is due to be compatible with E-mount lenses, and A-mount lenses via an adapter.