There are two aspects to this camera that have surprised me.
Firstly the almost universal uncritical love by reviewers on Youtube that have not been balanced by some of the negatives apparent from the specifications of the camera. Just do a search on the Lumix L10 reviews where most are smitten, 'Fuji should be worried', 'feels like a turning point', 'the ultimate EDC camera?', the larger size improves handling, sensor size doesn't matter anymore, it's a premium compact camera don't you know. Objective balanced reviews are rare but the video posted above in this thread did a very good job of it.
Secondly, I'd love to know the logic of some of the design and engineering decisions for what is a thinly disguised LX100 Mk3. A new(?) mechanical shutter tops out at 1/2000 so likely needs an ND filter or two. It has a mic jack but no IBIS so video is realistically only ever to be shot on a tripod or gimbal. The bigger body does allow a bigger battery, but for me there's a reason I kept my two Olympus Pens and sold the EM1. The EVF has a lower resolution but at least is now an OLED panel, the camera at least escaped a current Panasonic trend to delete EVFs or not spec them in the first place. Is the lens and sensor more dust proof than the earlier cameras, nobody mentions it at all. I will wait to actually handle one to assess the build quality and value for money and who knows maybe I have a light bulb moment, but £1299 is some ask from my perspective and indeed too close to the Leica Digilux 8. I know this is a sparsely populated part of the market currently and others will think the offering fits their requirements and that's fine by me.