As anticipated, the list building part of the app is going to require a Wahammer+ subscription starting on the 28th of August. While this is not a wholly unforeseen event, it does quash any hopes that the builder would work until new codexes are released. As it stands this will leave a number of players in a bind. There have been a few free alternatives to appear, but none are as complete as the GW one.
Warhammer+ still lacks much of an incentive for people to buy in as their original content is being released at a glacial pace, although their archive is spectacular. I am curious if this will help incentivize people to join and explore their content, or if players will just look elsewhere for cheaper options.
And remember, Frontline Gaming sells gaming products at a discount, every day in their webcart!