I was able to see the results in Google with this query:
So these two names previously existed but were removed. Apple must have been testing things (very modestly).
I think you can apply for access to their zone file through CZDS and see if more domains are registered.
But if there was any other active website under the .apple TLD, Google would have indexed it, since they certainly get all the zone files that they can for discovery purposes.
Apparently few corpTLDs are currently being used for any meaningful purpose. Almost as if the companies wanted to secure their TLD like they do defensive registrations for domain names. Doesn't mean that they have any immediate plans to use them. The proof of the pudding is in the eating.