Please, spare me all the drama & hysteria. Same story again & again. Every time a new BMW model's partial & low-res photo is leaked.
Wait till the car is officially revealed. It's more than fine. It looks much more modern & sharper & more aggressive looking than facelifted G30 5er. But still oozes class (eg. something E60 & F10 lacked a bit). And it's much more conventional compared to the G70 7er exterior. Interior is no surprise either. It follows the design of all the current recent BMWs.
To me the G60 5er exterior looks like a mix of E39, E60 & G30, interpreted in a very sharp & contemporary way. I like the E60-like sharp lines very much. Although it seems like it crosses into the Lexus exterior design territory a bit when viewed from certain angles.
Overall ... It's a sharp design but still classy & safe at the same time (especially when compared to some other recent BMW models). What bothers me though are some weird mixes of rounded & angular styling approaches on some of the exterior details. But that's not new to the BMW contemporary styling language. The exterior styling coherency is missing on the G60 too. Interior design is much more coherent.