Dear Colleagues, This is the second announcement concerning the Workshop in Category Theory and Algebraic Topology which will take place at the UCL in Louvain-la-Neuve, Belgium, from Thursday 10 to Saturday 12 September 2015. There will be 8 invited talks by the following lecturers. Joachim Kock (Universitat Autonoma de Barcelona) Stephen Lack (Macquarie University) Tom Leinster (University of Edinburgh) Sandra Mantovani (Universita degli Studi di Milano) Ieke Moerdijk (Radboud Universiteit Nijmegen) Fernando Muro (Universidad de Sevilla) Emily Riehl (Harvard University) Tim Van der Linden (Universite catholique de Louvain) The programme of the workshop will also include a very limited number of (25-minute) contributed talks. If you wish to give a talk, please send an abstract to Marino Gran (marino.gran@uclouvain.be <mailto:marino.gran@uclouvain.be>) by May 31. You will be informed concerning the acceptance of your abstract by June 15. The final programme of the workshop will be available by the end of June on the conference website, at the address http://sites.uclouvain.be/ctat2015 <http://sites.uclouvain.be/ctat2015> Online registration is now open on the conference website. The registration fee of 50 euros should be paid upon arrival at the conference in Louvain-la-Neuve: it will cover the conference documentation, the coffee breaks, a welcome reception on Thursday 10, and the conference dinner on Friday 11. Registration will be free for PhD students. The deadline for registering is June 30. We are looking forward to seeing you in Louvain-la-Neuve, Best regards, Kathryn Hess and Marino Gran [For admin and other information see: http://www.mta.ca/~cat-dist/ ]