It will be distributed as a handout. Common Lisp is described officially in the Common Lisp Reference Manual edited by Guy Steele.
Current announcements are in reverse chronological order.
This year CS193L emphasizes the features of Lisp that make it distinct from other programming languages except Scheme. Here are some of the features. Lisp programs are Lisp data. This is used to write programs that write programs and run them right away. Recursive conditional expressions are an elegant mathematical formalism that makes some programs easy to write, understand, and prove properties of.