From the website
The digitization of the Canadian Expeditionary Force (CEF) service files is underway and a substantial number of digitized files have been added to our website as part of the Government of Canada First World War commemoration activities. We will add new files every two weeks, as the CEF digitization initiative is a priority for us. LAC will ensure that Canadians have access to the files throughout the digitization process, scheduled to be completed by the end of 2018.
As of today, 205,064 of 640,000 files are available in the database. Latest box digitized—box: #2904, name: Emery.