[Moto G4 Plus Guides, News, & Discussion] echo92:
In addition to the other comments made about this:

1)Zooming into the picture, seems the 'Moto G4 Plus' text is slightly darker than the other descriptors and the font for the baseband (beginning with MSM8952) appears to be a different font to the other descriptors.

For example, look at the capital C in the baseband (CUST) and the C in the kernel timestamp (CST) and they seem to be 2 different styles. Contrast that with an Oreo soak test screenshot from the Moto Z Play: https://xdaforums.com/showpost.php?p=75395738&postcount=15 The capital Cs are more consistent in their styles.

Additionally, look at the M in 'Modelo' and the M in 'Moto G4 Plus' and the 'MSM8952'. The M in 'Modelo' has its 'tails' pointing straight down, whereas the M in 'Moto G4 Plus' is angled. Contrast that again with the Moto Z Play screenshots where the M is pointing straight down in the About Phone photos.

2)As mentioned above, seems odd they would have the Jan 2018 patch, and the Jan 2018 baseband, when the February 2018 patch has come out. Jan 2018 baseband ends in 62.01R, with the Feb 2018 baseband ending in 62.02R. In theory, this could be an early build of the Oreo beta, but Motorola in the past has appeared to focus development on soak tests and included the latest patches with them, rather than splitting development (I think with the G4 Play, Motorola continued to release security patches as they had major issues with the soak test).

3)The kernel version and build timestamps match that from the Moto Z Play Oreo soak test build. https://xdaforums.com/showpost.php?p=75395738&postcount=15 As others have noted in this thread https://xdaforums.com/moto-g4-plus/help/android-oreo-t3763868 our device is likely to be running kernel version 3.10 (now on extended support), which makes a kernel change to 3.18 unlikely. Especially as Google only mandated newer kernels for devices released with Oreo/built in 2017 - devices updated to Oreo, if I recall, could maintain their original kernels.

Yeah, at first glance may be convincing but now seems just to bring false hope and/or is clickbait for tech sites. Regardless, I await evidence or signs of a soak test for our devices.

EDIT: that's at least 2 articles from Techdroider I've seen where they've not verified their sources...

EDIT 2: I see that this has gotten some traction on the Techdroider website, and yes, my post has a lot of focus on the screenshot. However, that's the only screenshot of an 'Oreo build' for G4 Plus devices I've seen, and without word of a soak test, so the timing of this seems a little suspect. Couple that with previous fakes mentioned on the Moto G subreddit and thus it warranted closer inspection, if only to stop giving false hopes to users and try to keep the record straight. Else, users will keep asking on this forum and the other G5/G5S forums when Oreo is arriving. The simple answer is we don't know (yet).

As for those that are commenting about the kernel version requiring to be 3.18 or higher, Google's documentation says that if your device is being upgraded, you can stay on the base kernel if you so wish:

Reference: https://source.android.com/devices/architecture/kernel/modular-kernels