I was angry that the feature was missing, but there is a solution...
Press the right arrow button on the X1 remote and VOILA!!! The picture moves to the left of the screen and the guide comes up on the right side of the screen. Scroll through the guide as usual. While in this mode, if you want to see a specific channel's listings, arrow (up or down) to the desired channel then press the right arrow button again. To return to full screen mode, press exit.
The picture is much bigger than the small version that used to appear in the lower right corner of the screen. I like the bigger view of the screen much better.
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