I found this news, uploaded on 11 March 2016:
http://news.yule.com.cn/html/201603/215286.html
Since I don't read any Chinese characters, I just google translated it:
《射雕英雄传》演员阵容:钟汉良(郭靖)、陈楚河(杨康)、赵丽颖(黄蓉)、张定涵(穆念慈)、韩栋(欧 阳克)、张檬(梅超风)、唐国强(黄药师)、陈道明(段智兴)、吴宗宪(欧阳锋)、高雄(洪七公)、黄日华 (郭啸天)、苗侨伟(杨铁心)、王菲(包惜弱)、陈小艺(李萍)其他演员角色待定。 微信关注:中国娱乐网
And it's said there that Felix Wong will play Guo Jing's dad Guo Xiaotian while Michael Miu will play Yang Kang's dad Yang Tiexin. If this is true, I'm in Cloud Nine. But since I am not a native speaker, I need confirmation from you guys...