Overnight Jalopnik published details supplied by an anonymous tipster said to have links with Fiat Chrysler.
According to the publication's informant, the next-generation Wrangler will be available with the 3.6-litre Pentastar V6 in two states of tune.
Buyers will also be able to select from two versions of the long-rumoured 2.0-litre turbocharged four-cylinder petrol engine. Also on the menu are 2.2- and 3.0-litre turbo-diesel motors.
As is currently the case, the car will be available in two-door Wrangler and four-door Wrangler Unlimited formats. If this report is correct, the new Wrangler range can be had with either black or tan soft-tops, with powered operation optional.
Hardtop variants can be specified with either black or colour-coded lids.
No information was supplied regarding the new Wrangler's transmission options. An automatic is a virtual certainty, but a manual option has yet to be confirmed.
Other rumours indicate the new off-roader's top-spec 2.0-litre turbo will have around 224kW (300hp) of power on tap.
In March, grainy undisguised images of the Wrangler Unlimited were leaked on the JL Wrangler Forums. Despite being largely new, the next-generation model will not deviate too far from the styling of today's car.
To help lower weight, but also keep costs in check, the new Wrangler will feature aluminium components, including its bonnet, doors and tailgate.
The new Wrangler is expected to make its debut later this year. In the US, at least, the new Wrangler will be sold alongside the current model, which will remain in production for a while as an entry-level variant.
A new ute body style has been spied, and will join the range at a later date.