It seems as the though the Lexus RX will soon be joining both the GX and the LX in the marque's current three-row lineup. The news of a three-row RX is not surprising as Lexus themselves have previously confirmed back in 2016 that a three-row RX will be offered soon.

According to Japanese magazine Mag-X, the upcoming three-row RX will not have an extended wheelbase, but will ride on the same platform as the same current 5-seater RX. Instead, the three-row RX will have an increased rear overhang, giving third row occupants a minimal sense of space. Meanwhile, the rear window will also be moved back, but the size of the current tailgate will remain the same.

Report: Three-row Lexus RX may premiere at Tokyo Motor Show

Given that most of the RX's original specification will likely be retained, visibility from the third-row may not be as good given the additional seating. Folding the third-row down however, will supposedly expand luggage space compared to the standard 5-seater RX.

To distinguish the standard 5-seater from the three-row RX, Lexus will supposedly designate the latter with an 'L' badge. The 'L' badge is usually reserved for the long-wheel based LS, and has yet to be used on any other Lexus vehicle in the current lineup. But as mentioned earlier, the supposedly RX L will not have an extended wheelbase ironically.

Mag-X says that the three-row Lexus RX is reportedly going on sale beginning 2018, but will likely be exhibited at the upcoming Tokyo Motor Show in Japan.  

Source: Mag-X via Motor1