I have the same issue with a new Gemini Lake board (Asrock J4105 with UHD 600 graphics), and the response I've got (see hardware section) was to run a LE9 alpha build from Milhouse. This kind of works, but has some issues. If you can live with them, then for a stand-alone client (no shared mysql database) it might be worth to try...
There will be an 8.2.4 release in the future but there is no way we will contemplate a major kernel bump to support new Intel hardware (esp. with Intel drivers being oh-so-reliable) in a long-released branch. LE9 dev builds are the only option.
LE9 dev builds are the only option.
The current plan is to support that devices with LE10 or maybe LE9.2 (depends at the time of release) ... just as warning. So basically not before 2019.
wow... 2019 
that's kind of shocking. i didn't expect this as well, i.e. as the apollo lake graphics did work immediately in LE8.
lokks like I picked the wrong board 
Historically we have used a common kernel for all pi and x86 things but the team is currently split between the desire to use an LTS kernel which benefits pi hardware (a huge portion of our userbase) and to track mainline which would benefit new x86 hardware. There are benefits (and cons) to both. I personally hope we end up using LTS (4.14) for pi hardware and track mainline kernels with x86 stuff - the current 8.2 release has pi on 4.9 while x86 is on 4.11 so there is a precedent, although it's not been without issue.
A year isn't too long to wait on the Linux route. It always takes a while for the drivers to become available (and working). Even Ubuntu 18.04 is "just" a possibility for coffee lake. So 2019 isn't that far away.
I was going down the i3-8100 or J4105 route also, so I can understand the frustration.
Looking around, this seems to work on Ubuntu 16.04 - not too sure if possible on LE. From Here
It always takes a while for the drivers to become available
afaik the J4105 etc should work with current milhouse builds - they backported the necessary stuff to 4.14 it seems
is there a version of LE that handles HRD10 correctly
nope, there is no linux implementation 
they working on it - no idea when they are ready
Getting the graphics version recognised would be a big step forward. However, is there a version of LE that handles HDR10 correctly and forwards the required flags to the display? If not, there's little point in taking things forward when there are more established solutions around.
If you want HDR10 support under Linux, you are currently pretty much limited to ARM solutions.
The AMLogic S912 and S905X both support HDR10 flagging and up-to 2160/60p HEVC decode and output.
For x86 HDR, at the moment you are stuck with Windows, and it's not as straightforward.
At the moment I've not seen anything that flags HLG HDR output over HDMI, though hopefully as HLG takes off this will change.
The BBC iPlayer is doing a number of 2160/50p HLG HDR shows this year I believe, and have already shown Blue Planet II and a minor live Rugby League match (as a quiet test) this year.
try my community build 8.2.5-5.42 from here
LE 8.2.5 with UHD 630 / Coffee Lake support and luks, lvm2, dm-raid
but it is fairly new and needed many software updates, so it might be unstable
i used it only for about 12h of playback. So far it is stable for me.
