Dear Colleagues, It is a pleasure to announce that the Editorial Board of the "Cahiers de Topologie et Geometrie Differentielle Categoriques" will be enlarged and modified as follows, starting from January 2015: Chief Editors: Ehresmann Andree, Gran Marino, Guitart Rene Editors: Adamek Jiri, Berger Clemens, Bunge Marta, Clementino Maria Manuel, Janelidze Zurab, Johnstone Peter, Kock Anders, Lack Stephen, Mantovani Sandra, Porter Tim, Pradines Jean, Riehl Emily, Street Ross. The "Cahiers" were created in 1957 under the initial title "Seminaire Ehresmann. Topologie et Geometrie Differentielle", published in the series of the "Seminaires de l'Institut Henri Poincare". Starting from Volume II, they appeared as an independent publication, the title becoming "Cahiers de Topologie et Geometrie Differentielle" in 1966. In 1984 the present name "Cahiers de Topologie et Geometrie Differentielle Categoriques" was chosen, underlying the continuity with the origin of the journal, and also the natural change consisting in placing category theory at the centre of the journal. The "Cahiers" is a journal which, since its foundation, is under the only responsibility of its Chief-Editor(s). Since 1975, this journal has only lived thanks to its subscriptions, without any external subvention or material help. The enlargement of the Editorial Board aims at including a new generation of mathematicians and opening the journal to some new research areas where category theory is developing and is being applied. The main research subject of the journal remains pure category theory, together with its applications in topology, differential geometry, algebraic geometry, universal algebra, homological algebra, and algebraic topology. Papers submitted for publication should be sent to one of the editors as a pdf file, with a copy to Andree Ehresmann (ehres@u-picardie.fr). More information on the "Cahiers" can be found on the site http://ehres.pagesperso-orange.fr/Cahiers/Ctgdc.htm Correspondence concerning subscriptions and backsets is to be sent to Andree Ehresmann by e-mail: ehres@u-picardie.fr With our best wishes, Andree Ehresmann, Marino Gran, Rene Guitart [For admin and other information see: http://www.mta.ca/~cat-dist/ ]