A report prior to the launch of the iPhone 6 and iPhone 6 Plus claimed that the Apple iWork apps would be pre-installed on 64GB and 128GB devices. As retail launch hits today we're able to confirm the report as true, and that yes, these apps are pre-installed on your new iPhone, but worry not. If you don't want them you can delete them.
It's not like Apple's 'other' pre-installed apps that you might not want on your phone, you do at least get a choice. The full list includes iMovie, Garageband, Keynote, Pages, Numbers, and iTunes U. As you'll see in the image up top I've already removed Keynote.
So they're there. But only if you want them. Which is good.