The HMD Fusion was unveiled earlier this month, and now it's become available to purchase from HMD itself in Europe. You'll have to pay €269.99 to get it with 6GB of RAM and 128GB of storage, or €299.99 with 8GB of RAM and 256GB of storage. The phone's main selling point is its modular design - it has so called Fusion outfits, basically interchangeable covers that can add features like wireless charging, more rugged protection, a ring light, that sort of thing. HMD is certainly not the first company to try its hand at the modular (or rather, in this case, more like modular-ish)...
Source: https://www.gsmarena.com/hmd_fusion_modular_smartphone_is_now_available-news-64490.php