This is a final announcement for A Field's Institute Sponsored Workshop, entitled: Applications of traces to algebra, analysis and categorical logic to be held at the University of Ottawa from April 28-30, 2007. It will be hosted by the Ottawa Logic and Foundations of Computing Group. The local organizers are Rick Blute, Pieter Hofstra and Phil Scott. A description of the purpose of the conference is below, and can be found on the conference website http://aix1.uottawa.ca/~scpsg/Fields07/workshop.html . The conference will begin with tutorials, including a minicourse on traced monoidal categories, and an introduction to various notions of trace in functional analysis. We will have the following invited speakers: Samson Abramsky (Oxford) Robin Cockett (Calgary) Andre Joyal (UQAM) Louis Kauffman (Illinois) Claus Koestler (Carleton) Paul-Andre Mellies (Paris7) Matthias Neufang (Carleton) Timothy Porter (Bangor) as well as contributed talks from various researchers, including Rick Blute (Ottawa) Greg Meredith (Oxford) Prakash Panangaden (McGill) Eric Paquette (U.Montreal) Tarmo Uustalu (Tallinn University of Technology) We note the following new information: 1) We have room for a few more contributed talks. Anyone interested should contact the organizers. 2) We have a very small number of rooms on campus still available. These are in the university dorms, but are suites, rather than typical rooms. They are 80 dollars per night, and hold either one or two people. Anyone interested should contact Rick Blute immediately. 3) We ask that anyone attending please notify us by April 10th, so we may order food. Rick Blute, 613-562-5800, ext. 3535 (rblute@mathstat.uottawa) Pieter Hofstra, 613-562-5800, ext. 3494 (phofstra@uottawa.ca) Philip Scott, 613-562-5800, ext. 3502 (phil@site.uottawa.ca)