I bought one recently with the i5 8250u and RX550. Took about 7 business days from Shanghai to Sydney. Thank goodness it's come preinstalled with bios 1.12 but now I'm reluctant to update to 1.15 because it's most likely going to gimp my performance. Can't adjust manually with normal gpu software with these unfortunately - it's a 'hybrid' gpu, only turns on when gaming.
I love this thing, it's beautiful yet professional, perfect size, nice screen, keyboard, trackpad, and the performance is great (even the NVMe, coming from Sata ssd this things flies!). It was the best for money proposition and I'm glad I took the punt.
Anyway, I think the heat issues described here are a massive over exaggeration. I had a Toshiba Kira previously, also a beautiful laptop, but man that thing got hot with only integrated graphics. The E480 does get warm, but not crazy hot or anything...who uses Furmark or Prime 95 on a regular basis? Those benches are extreme I believe.
As a result of this review it seems Lenovo has really throttled the RX 550, which is really disappointing because it runs great as it is now, on bios 1.12 and tweaking in Radeon software. It's great to be able to game while I'm away from home. Unfortunately I won't be able to receive any other benefits from the updated bios though.
Ultimately, if anyone is considering it and does not use extreme benchmarks or graphically intensive software above games, then go for it and don't be swayed by supposed heat issues. Sure it gets warm, but not many laptops don't when used on a lap. Keep the fan holes uncovered as best you can.