It's not exactly something that could easily be tested for a review, but it might be worth pointing out that OLED displays tend to be much more prone to experiencing burn-in than LCD displays, and can be subject to dimming over time. That reduced durability is part of why they still are not readily available for PCs.
Also, a 4K display is arguably a bit overkill for this system. The benefits of going with 4K resolution on a 15" display seem a bit questionable, since even 1080p is rather sharp on a screen that small. I suppose they are likely just using the same manufacturing process for the OLED screen that many smartphone displays use, hence the high pixel density, though it seems excessive for a screen that will typically be viewed from nearly a couple feet away. And if you end up running some application or game that doesn't play nice with high-DPI displays, prepare for microscopic text.
A 2070 Max-Q is also inadequate for running most recent games at 4K resolution. For anyone not in the know, a laptop 2070 is clocked a fair amount lower than a desktop 2070 to begin with, and the Max-Q variant is clocked lower still, for thinner and lighter notebooks. As a result, a 2070 desktop card tends to be around 40% faster than a 2070 Max-Q, meaning that laptop part only offers performance roughly comparable to a desktop 1660 Ti at best. Good for 1080p resolution, alright for 1440p, but not really adequate for running most recent AAA games at 4K. It does have RT cores, though fewer than a desktop 2060, so RTX performance probably isn't going to be particularly good, even at 1080p.
And the 2080 Max-Q isn't much better, being about on par with a desktop 2060, with the same number of RT cores as well. It would be nice if Nvidia gave these parts entirely different names from their desktop counterparts, since aside from having the same number of standard graphics cores (at lower clocks), these parts bear little resemblance to their desktop counterparts when it comes to performance. Undoubtedly many people think they will be getting performance equivalent to a $500 desktop 2070 or a $700 desktop 2080 in their laptop, when in reality the "Max-Q" card is only providing performance comparable to desktop hardware costing around half as much.