Speaking to sources at Buick earlier in April, during the reveal of the 2018 Regal Sportback and Regal TourX wagon, we learned that the brand plans to re-up the sporty GS model in the new Regal lineup. Buick isn’t saying when we might expect the hotter Regal variant to show up?the Sportback and TourX are due out by the end of 2017?but thanks to some sleuthing by The Truth about Cars (and highlighted by Road & Track), we might have an idea of what to expect from the forthcoming GS. 
To preface this news, we should point out that the outgoing Regal GS married a sportified chassis with a turbocharged 2.0-liter four-cylinder engine. The package was good for 259 horsepower and 295 lb-ft of torque, numbers that barely edge out the 2018 Regal’s standard turbo four, with 250 ponies. So what does Buick have planned for the next GS" According to The Truth about Cars, a premature slice of metadata from Buick’s Canada-market website (and a posting on the live site that has since been taken down) suggests the GS will get a 3.6-liter V-6 engine and a version of the regular Regal’s torque-vectoring all-wheel drive. A V-6 is one way to one-up the turbocharged four-cylinder in the 2018 Regal Sportback, not to mention line up better against Acura’s six-cylinder TLX (which also offers torque-vectoring AWD). General Motors has a variety of 3.6-liter V-6s to choose from?a 310-hp version powers the larger Buick LaCrosse, for example?but in other configu...