New update add a transparent line un the middle of the screen

There is already the concept of transparent tiles implemented by the Xbox One. It may not be what you envisioned and you may have better suggestion for future updates to this feature. Head over to the Feedback forums and add your own take on the tile transparency
or find the idea that best describes what changes you would like to see made to this feature. If you find an idea similar to what you want out of the feature you can just add your own comments to the idea to help further explain your vision. Cheers!

Adjust tile transparency
Adjusting the tile transparency allows you to better view your custom background through the tiles on the screen.

Note You cannot change tile transparency if your background is set to a solid color.

To adjust your background:

1. 1. Scroll left on the Home screen to open the guide.
2. 2. Select Settings.
3. 3. Select All Settings.
4. 4. Select Personalization, and then in the right pane, select My color & background.
5. 5. Select Tile transparency on the My color & background page.
6. 6. Choose the transparency that you prefer (Solid, Mostly solid, Partly transparent, or Mostly transparent).

It may be best to reach out to the official Chat/Phone Team for additional assistance:
xbx.lv/rqQZaL

I figured this out! Not sure if it was a change they made with this update, but it seems to have resent the 'widget transparency' option in the settings. Open game bar, click the settings "gear" then under 'Personalization' there is a section for 'Widget Transparency". Farther under that, there are two sliders that just say 'Pinned", set those both to 100 and it'll be fully transparent again. The way that settings screen is set up it feels like it's two unrelated sliders.

The only problem i have with the new minecraft is that i have a 50 inch plasma tv, and its the only thing so far that has given me screen burn....they should add a hud transparency to the opions menu or something but i have no idea where i would complain
so there ya go lol

While the transparent tiles are very cool, I'm mildly upset about the new update for 2 reasons: 1) I can't seem to find any option for changing the transparency level, and 2) that the game-hubs feature isn't visible for me yet.