Yes, I thought that thay can be seen from the nworbnhoj post.
Mine looks similar, no matter what I choose in 'Connect via' everything in Internet / WAN part stays the same, never seen behaviour like that in previous properly working builds, this was always changing depending on the choosen option.

- basic.png (79.17 KiB) Viewed 11652 times
With the settings visible on the screenshot I am now connected (cause I preserved settings from 1.6 version while updating).
Similar situation is with Wireless. It is by default disabled, but every configueration option is visible.

- wireless.png (96.52 KiB) Viewed 11652 times
When I want to save settings there comes an information window which tells that there is an error in many points.

- info.png (7.16 KiB) Viewed 11652 times
Here it is bit different when I change the Wireless mode to AP it became fine and if I go back again to Disabled it is also fine - this is bit annoying, but just minor issue, at least for me, looks like changing option in Wireless mode triggers the refresh of the page.
So finally it looks like the only missing part for this LTE modem configuration left is after setting Wi-Fi is missing User Name and Password, but there was no need to enter these data before and I don't use User Name and Password at all for my LTE connection.
I cannot add 4th screenshot, but it's similar to the last one but only first two lines appears (after "solving" the Wi-Fi settings).
If the options (User Name, Password) will be not visible/needed to save settings maybe I should be able to configure the connection from fresh 1.7.x firmware installation.
Anyway the whole Internet / WAN part is much more detailed than the older version, of course I'm not saying it's wrong to use new, but maybe some small error came into the 'source' of the page - I'm not an expert to judge here, just loudly thinking.
--- EDIT ----
Just one more thing came to my mind, with my current setup I'm not able to turn on Wi-Fi at all (even its parameters can be set), cause after all it will not allow me to save settings (due to missing User Name & Password).