So are people looking for an OTA or update that doesn't exist? This isn't Nexus or Pixel so anything Google announces and releases doesn't automatically apply.
To reiterate what I've read from others, they have the H850 variant of the G5, the main unlocked version primarily designed for the EMEA market.
Their question is why their specific H850 variant of the G5 has not received updates since October while other variants of the G5, like US carrier models such as the H820 on AT&T and the H830 on T-Mobile US have received much more recent patches.
Usually, unlocked models receive patches at a quicker and more frequent rate due to the lack of the necessity for carrier certification. But in this case, it seems similar to the US unlocked Galaxy S7 until very recently.