Lexus says show visitors can expect a completely redesigned third-generation IS when it is revealed in Detroit, with the luxury manufacturer saying the new sedan has been remodelled inside and out.
Detailed information has been scarce so far, but the company said the new IS was inspired by Lexus' LF-CC concept car which appeared at the 2012 Paris Motor Show. It also takes some design cues from the LFA supercar.
The IS is the biggest-selling Lexus in Australia, though a launch date for the new model locally is yet to be confirmed.
The 2.5 and 3.5-litre V6s currently on offer will make it here as the IS250 and IS350 once again. Overseas, Lexus will offer the new range with its hybrid drivetrain at the expense of a diesel option, with the IS300h combining a 2.5-litre four-cylinder petrol engine with an electric motor.
However, Lexus is yet to decide whether this version will make it Down Under.
The hybrid IS is expected to have the same dual fuel-injection system found in the Toyota 86 and other high-performance vehicles to ensure it still packs a powerful punch.
Sleek F-Sport variants are also likely to be produced. The LF-CC debuted as a preview of a coupe version of the IS and a two-door version may see the light of day in the not-too-distant future.
Those unable to afford the flight to Michigan for the big auto show can still witness the debut of the IS, with its unveiling to be streamed live on the Lexus Facebook page this Tuesday at 10.30pm WA time.
A day earlier, Lexus' parent company Toyota will use the Detroit expo to reveal a new sports sedan concept called the Furia.
As with the IS, in the lead-up to the event the company has kept its cards close to its chest in regards to details about the Furia - Spanish for "fury" - and it isn't known whether it will be a precursor to a production model or simply a one-off.
Toyota has said it is "an exciting new sedan concept". There are no details as to what type of drivetrain will power the concept vehicle, however a 40-second teaser video clip offers fleeting glimpses of some key aspects of the car's appearance.
There are crisp LED lights at both ends, including a lit-up front grille, while what appears to be carbon fibre is used liberally on trim features such as the rear spoiler and side skirts.
A silhouette of the whole vehicle then shows a sporty sedan body shape.
The Furia comes after the Toyota 86 collected many end-of-year awards in 2012, the success of which may have been the impetus for the manufacturer to consider offering a larger sports vehicle to buyers.