Some sources in English talking of the book:

The Guardian writes about the reception (and with discussion thread at the bottom):

http://www.guardian.co.uk/books/2013/apr/12/haruki-murakami-colourless-tsukuru-tazaki

Reuters:
http://in.reuters.com/article/2013/04/12/us-japan-book-idINBRE93B06L20130412