I just updated the october 2017 rom but the latest is not detected. It probably depends on where you live in the world.

Installed the latest update (local update). All is working fine. No mention of it in the 'About Phone' section but it all seemed to work fine.

You want to say that you have updated to 20180104 by local update ?
I think that it's not possible ... All process look like successful but if you check better the ROM don't change. Correct ?

i've tried it with my phone, i've a twrp-, xposed- and rootet phone. it's very logic that a OTA only works with stock-recovery (i've tried already a local update with twrp, absolut fail).

Well, they prevented fails on my phone - there's a message like "your phone is rootet, you could not update".

So i unrootet my phone, still the same message. Then i've overwrite the system-partition (there i'm excepting the rootet stuff) - anyway the same message about rooting.

In the end, i reflashed the complete phone, also userdata (factory reset like) - after this, i was able to update.

Works ok so far, but no updated security-patches (still 5. juni 17), only the kernel looks updatet.

Sometimes i had a bug, which kick the wlan and bluetooth after a while (some hours) - it still find networks, but "authentification failed" - after a reboot, it works again. I hope, this update fix the issue, but it's to fresh to confirm this.

I did not try to root my phone since this update - no idea if this still work or if they have now more checks, which disallow twrp or so.

It's all done.. Flashed the latest rom and re-rooted the phone.
My only peev is that some people automatically received this update and some didn't.

@Admin,
The flashable ROM 20180313 is available now ... Thanks

Well on that point, 20180312 may not have gone through.. There's nothing in the 'About phone' details which says that it was updated.
I simply placed the zip on my sd card in the phone and ran a local update. It said it was successful.

Maybe it wasn't.. How can I tell?

You can check in settings/about/updates .
Tap several times on the word "update" at the top left of the screen and check the current version.

It hadn't gone through, but I just let this install automatically and now I'm stuck in TWRP and can't get out of it. It just keeps loading to the twrp screen.

Forgot to unroot..

I've no time now to test (busy in job) but i'll upgrade and root mine tonight if possible.
Normal steps are flash last ROM 20180313 and after done, flash custom recovery TWRP.
Boot in TWRP and flash SuperSU as usual.