It doesn't say it, it shows it. Look at the pictographs. The headphone jack is shown as a TRS stereo connector but the line out connections are depicted as TS.
That doesn't tell the whole story. The previous generation of this device supported balanced or unbalanced line output, either TS or TRS. So its perfectly reasonable that the pic may have shown a picture of TS cables, when it fact it also still supports TRS, hypothetically speaking.
I agree that this is probably the most likely truth and I am just trying to determine once and for all 100% that this device has been changed to unbalanced-only.