The Lennon Letters is the first collection of John's correspondences to be compiled, and it will be available in October of 2012 through the publisher Little, Brown and Company.
In the release about "The Lennon Letters," the publisher points out that Lennon, who died in 1980, never had a chance to convert to email. He was inclined to reach for pen and paper:
He lived -- and died -- in an age before emails and texts. Pen and ink were his medium. John wrote letters and postcards all of his life; to his friends, family, strangers, newspapers, organisations, lawyers and the laundry -- most of which were funny, informative, campaigning, wise, mad, poetic, anguished and sometimes heartbreaking....many of the letters are reproduced as they were, in his handwriting or typing, plus the odd cartoon or doodle.