Opel's Insignia lineup is about to be updated, as evidenced by the sighting of partially camouflaged prototypes.

The latest tester is for the Insignia's Grand Sport fastback body style, which we get here as the Buick Regal Sportback. Opel engineers are also testing an updated Insignia Sports Tourer wagon, which we get in soft-roader form as the Buick Regal TourX.

The current Insignia was only introduced in 2017 so to see engineers testing an updated version so soon is unusual.

2019 Buick Regal

2019 Buick Regal

The reason for the quick facelift is to implement a new design language Opel will introduce across its range to mark the brand's revival under the stewardship of new parent company PSA Group. The French automaker bought Opel from General Motors in 2017, and has already made it profitable.

Opel previewed its new design language with the GT X Experimental concept unveiled last August. Key to design is the new face where two strong axes intersect at a prominent logo in the front grille. The vertical axis is emphasized by a central hood crease while the horizontal is by a chrome strip and wing-shaped daytime running lights.

The changes on the prototype are heavily camouflaged but we can already see the new grille poking through.

Opel GT X Experimental concept

Opel GT X Experimental concept

It's possible some of the Insignia's powertrains are changed, too. The current powertrains are mostly GM units which PSA Group uses under license, so we could see the French automaker swap in some of its own units. Another reason could be to drop in more efficient units to meet stricter emissions standards coming into force in Europe in 2020.How these changes will affect the Buick Regal lineup isn't clear.

Note, it's not just the Insignia that Opel plans to update. The German brand plans to launch eight redesigned or updated models by the end of 2020, including some electric cars. Some we know include an updated Astra and redesigned Corsa and Mokka X models. This updated Insignia should bow late this year or early next.

At the same time Opel will drop low-volume sellers like the Adam, Cascada and Karl. We get the Cascada in Buick showrooms and our version could be on its way out too since Opel is the manufacturer, however Buick remains quiet on the matter.