It is stated on the french site odb-opera.com under ‘quiz’s et sondages ‘ ( Nouveaux pronostics ONP, page 143).
It should be quite accurate, since the Paris Opera has sent a brochure to it’s customers with ticket series.
The official presentation of the season is apparently on January 29th
Jarkko, here is the link to the Canadian Opera Company's website on Wainwrights' Hadrian with further information of the world-premiere production featuring our beloved Karita: http://m.coc.ca/productions/16480