The company has removed a notice about rejecting apps with the word "Metro" in the title.
Most iOS apps don't get any downloads and are nearly impossible to find.
The company is demanding more evidence in its trademark battle with Amazon.
"Free" is pretty common, but it's not the most popular.
Developers have earned $5.5 billion from the store.
The new app store will support trial periods, in-app billing and third-party payment systems.
Microsoft hopes Apps for Office will "reinvigorate Office as a platform."
An insider offers advice for getting attention from Apple.