ExCaliberPC utilized deflection tactics and conducted themselves with a substantial level of immaturity when I pressed them regarding the review postings that they worked to censor on some of their listings about a year ago. Regrettably I no longer have access to that thread, because I would like to quote some of it.
I wouldn't be too quick to support ExCaliberPC by buying from them unless I have reason to believe that they've changed, but it is helpful to see what the configurations are going to be.
In computex, they actually compared aero 15 placed in a 0 Celsius controlled container, against another aero 15 in room temperature, fire strike ran 17062 and 16917 respectively. This suggest thermal is controlled near optimal condition of 0 Celsius.
A couple years ago Lenovo had trouble shipping even one variant of one model with an OLED screen (X1 Yoga, announced but delayed twice and then possibly canceled), now all of a sudden everybody has OLED.
Well, that was fast. Online retailers are now accepting pre-orders for the latest 2019 Aero 15 merely 24 hours after it was made public. The OLED system is notable for its high specifications even at the base level with its 4K UHD display being standard across all SKUs.