The first with a guaranteed release date is the The Legend of Heroes Sen no Kiseki Perfect Guide, which will be released on 1/15/2015. You can find it at Taobao here.
They will also be releasing Chinese language versions of the Zero no Kiseki Special Collection Books sometime during the month of January, or during the month of February. You can preorder the book here.
Last, but not least, they will also be releasing the Sen no Kiseki Visual Art Collection in Chinese as well, with preorders including a limited edition CD along with them. You can preorder the book here, and it will be going on sale in March 2015.