A new Lexus LS could arrive before the end of 2012.

Lexus' lineup has quickly transformed into one of the freshest in the premium segment, but one major outlier still remains - the flagship LS sedan. However, Leftlane has learned that a new version of the LS will debut within the next few months.

Although details remain sketchy, Lexus is putting the finishing touches on its next-generation LS sedan, with the BMW 7-Series rival likely to bow by year's end. The LS will join fresh versions of the GS and ES sedans in the Lexus lineup.

Having changed little in its 7-year production run, look for the next-generation LS to sport all-new sheet metal in the fashion of Lexus' current L Finesse design language. The LS' overall look will likely fall somewhere between the aggressive GS and the more laid-back ES, but one thing is for sure - the new LS will arrive wearing Lexus' spindle front grille.

Short and long-wheelbase versions of the LS will carry over, but the LS' all-V8 lineup might not. It's possible Lexus could offer a LS model with a V6, following similar downsizing moves by BMW and Mercedes-Benz. Lexus could even swap out the LS' V8 hybrid drivetrain for the hybridized 3.5L V6 used in the GS 450h.

Be sure to stay tuned as we keep our ear to the ground for more information on Lexus' next-generation LS.