You can now pre-order the Django Unchained Blu-ray on Amazon. Amazon is charging $27.99 and includes Free Super Saver Shipping. That is $12 less than MSRP of $39.99. No release date for the Blu-ray has been announced, nor does Amazon list what special features are included on the Blu-ray.
The Django Unchained DVD is also available for pre-order. Amazon is selling it for $19.99 with eligiblity for Free Super Saver Shipping. Again, no release date or special features on this have been announced for the DVD.
The above image is what Amazon is displaying for the Blu-ray and DVD covers, but this will likely be changed as more information about the Blu-ray is released in later weeks.