The first of the AK100 events seems to already have started (actually not: see update below), with the exhibition at the Petit Palais in Paris. Here is a short description in French and in English with further details.
You can also download a French language PDF brochure about the event: click here.
Update: As Fabien notes in his excellent account of the exhibition in a comment to this post, this is not an AK100 related event at all. Do also read Diego’s earlier comments — together, the two give you something of a verbal tour of the exhibition!