Here it is, https://library-archives.canada.ca/eng/Pages/Home.aspx, the top part, in advance of the date LAC thought it would become available. The images make for eye appeal.
You can use the search box at the top or click on Collection if you’re searching for information. Shouldn’t that be Collections?
On that page under Most requested, find Census search, First World War Personnel Records, Ask us a question, and Image credits. Go down another level, under “Help with your research,” to find the page I was expecting to not be as far into the site.
It’s early days yet. LAC will undoubtedly make adjustments as they get feedback directly and from usage patterns.