Short answers, pulled from the story.
Revolver was released in the UK on the 5th of August 1966 and in the United States on the 8th of August 1966. The album entered the Billboard Top LPs chart at number one on the 10th of September 1966.
George Martin served as producer once again for the Revolver sessions. Geoff Emerick joined as the new recording engineer to work alongside Martin during the process.
The group incorporated Indian tambura, tabla, clavichord, vibraphone, and tack piano into their work for the first time. Harrison used a Gibson SG as his preferred instrument while Fairchild 660 limiters were introduced for recording.
The sessions spent over 220 hours recording excluding mixing sessions which compares with less than 80 hours for Rubber Soul. Recording began at EMI Studio 3 in London on the 6th of April 1966.
German-born bassist and artist Klaus Voormann created the cover combining line drawing with photo collage using photographs mostly taken over 1964 and 1965 by Robert Freeman. His choice of black-and-white cover stood in deliberate defiance of the preference for vivid color.