This. Apple has been actively courting the fashion world. And it's not just Maxfield, it's Colette in Paris, The Corner in Berlin, and boutiques in London, Milan, Japan, China, etc.
Maxfield doesn't want, nor need Apple's cache´ to draw in customers. In fact this is the worst thing that could happen for their regular customers -- a bunch of low income Apple fanatics lining up around their store like homeless people to buy a $350 watch, and who have no intention of buying anything else, or ever shopping there again. As a result, after this initial order is filled Maxfield may well only offer the higher end watches once the Edition is released.
Apple on the other hand gets their product in exclusive boutiques visited by fashionistas who likely don't otherwise hang out at Apple Stores, nor would they ever go there looking for a fashion item like a watch.
Regardless, I don't see Apple entering into any kind of contract that requires them to do anything, much less supply watches in the face of production issues. That said, Apple's blatant pandering to the fashion crowd may be the first of many compromises they are willing to make to play in this despicable industry.