For the 2017-18 season we will be posting the WHL line combinations, defensemen pairings and starting goalie information at the DubNetwork website ... http://www.dubnetwork.ca/ .
For now it is a part of the subscriber service WHL Stats Pro ... http://www.dubnetwork.ca/whlstatspro/ but eventually will be posted regularly on the DubNetwork site.
I also retweet all WHL lines so if you follow me on twitter you will have access to all that information.