It's an interesting business idea. The bikes are assembled in the former Cagiva plant in Cassinetta di Biadronno, across the lake from the original Aermacchi/Cagiva (now MV Agusta) factory. Much of Cagiva's product line was made there, then after BMW bought Husqvarna it was used exclusively for those bikes and Cagiva retracted into the original plant. When BMW subsequently gave up on 'real' dirt bikes and sold the Husqvarna name to KTM, they closed the plant and brought the products and designs in house to Austria. That left the relatively new (built in 1999) plant vacant and the pre-existing BMW/Husqvarna designs available as a basis for new products. It looks like others will use different designs judging from photos on the SWM website, and I'm sure the Chinese connection will keep manufacturing cost down. It ends up being a pretty modern product in terms of sourcing and the assembly plant, although not much to do with the old SWM - SWM was an otherwise unrelated 1970s dirt bike brand, a brand name that is nostalgic and ‘Italian’ to the European market.
It would be interesting to know what if any connection the Chinese company had with the pre-existing product before they bought the factory from BMW.