According to a report from BGR, which cited a “trusted source,” Apple is preparing to demo a refreshed version of its Apple TV OS at WWDC next week. The report also claimed it is the same OS that runs on the much-rumored Apple HDTV that many reports indicate the company is working on. BGR also said Apple is testing a new “control out” API. The report explained:

We’ve heard Apple is actively trying to court manufacturers to use a new “control out” API in order for third-party manufacturers to make accessories that are compatible with the new Apple TV OS and the upcoming “iTV.” It’s said that by using the API, it will be possible to control any connected components all from the Apple remote (and the Apple remote iOS app as well, we’re assuming)… The control out API is said to work with all aspects of various popular components, even allowing control over things like program guides on a cable operators’ set top boxes and other hardware components.

It seems odd that Apple would introduce an entirely new Apple TV operating system at this WWDC. Just in March, Apple introduced an entirely new Apple TV user-interface that takes design features from the version of iOS that runs on iPads, iPhones, and iPod touches. Apple’s move to introduce another Apple TV OS (just a couple months after its last revamp) sounds aggressive. However, with rumors of Apple meeting the TV space very soon, it is possible.

Besides the unconfirmed possibility of a new Apple TV UI, we do expect to see the thinner, redesigned MacBook Pro that we recently revealed, enhancements to photo and video sharing features in iCloudnew features of iOS 6, and Mountain Lion. Apple’s keynote is the opening day of WWDC on June 11 at 10 a.m. PST.