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Recently, we posted on the ability to opt into the Google’s Preview Program. The first experimental feature was released and it was used to remove all ‘Chrome’ branding from Chromecast. Instead, it replaced it with a simple ‘G’ logo. The preview released firmware version 1.21.72444. This firmware was released to all Chromecast devices including gen 1, gen 2, and audio devices. Google’s official release page indicated this release was to fix general bug fixes and stability improvements. But it doesn’t appear there were anything done other than the branding.