There is a film coming out in 2011 about Puss in Boots, before he met Shrek.

Plot: An in-development prequel imagines events before the character's appearance in the events of Shrek 2, while introducing new characters. Antonio Banderas returns, and Salma Hayek will lend her voice to love interest Kitty. Shrek the Third helmer Chris Miller is onboard to direct the film.