Will the Kindle be here in 100 years time?

No, but the next generation of Kindle will and and by then it will come free and in virtual 3D colour with 1000 free old computer games, a collection of 1980's videos, and a virtual button to see your family home videos going back to Great Uncle Dave. It came free with your great grand children's one way ticket to Mars. Your wonderful collection of now 200 year old books? Too heavy to take with them apparently.