Here is some additional info from the Jeep Gladiator forum..
Q: When will pricing be announced? A: Closer to when the vehicle goes on sale in Q2 of 2019
Q: When should we expect delivery? A: Q2 of 2019
Q: When should we expect the diesel Gladiator? A: In 2020 (calendar year)
Q: What are major mechanical differences between JT Gladiator and JL Wrangler? Answer:
All new frame
Longer and different construction
High-strength steel inserts
Frame-mounted class 4 trailer hitch with a two-inch receiver and seven-pin trailer connectivity
Heavier duty axles
Longer transmission tunnel
Longer brake lines
Steel truck bed
Unique rear suspension
Hydraulic “hydro" mounts between frame and body (tuned to manage energy)
Hydraulic “hydro” engine mounts
Larger brakes (front brakes identical to Wrangler, but the rears are larger)
Different wheels (can handle more payload and towing than factory Wrangler wheels)
Gladiator meets SAE J2807 tow test requirements
Larger grille openings to allow more cooling
Higher wattage fan (800W) to allow more cooling
Q: Can you tell us more about the Gladiator’s rear suspension? A: The rear suspension is unique to the Gladiator. It’s a 5-link suspension like the Wrangler, but borrows the upper control arms, lower control arms and track bar from the 2019 Ram 1500. So the rear suspension is a meld of the Wrangler and Ram 1500 suspensions.
Q: Will the Gladiator receive exclusive colors? Will any be available at launch? A: Yes, exclusive colors will include Hydro Blue, Gobi and Gator. Hydro Blue will be available at launch and the others will be later availability.
Q: Will there be optional rear locking differential for non-Rubicon models? A: Yes
Q: Is spray on bedliner available? A: Yes, it’s available from factory and sprayed in-house at the Toledo plant. It carries a factory warranty for as long as the vehicle warranty.
Q: Do the different Gladiator models have different towing and payload capacity? A: Yes, please see the Gladiator tech specs sheet.
Q: Does the Gladiator come with an integrated brake controller? A: No, it comes standard with an integrated trailer sway controller which helps control vehicle/trailer swaying. If the vehicle senses the back end swaying, ESC will clamp down and control it.
Q: Will there be a Mopar brake controller unit available? A: Yes, there will be a Mopar brake controller module which simply plugs into the factory AUX ports and provides brake controller function.
Q: Are there any driving comfort improvements made over the JL Wrangler? A: Ride quality and steering are both similar to the JL. Several improvements had to be made to achieve this — longer wheelbase, unique rear suspension geometry, shock placement, hydro (hydraulic) mounts between frame and body tuned to manage energy, and engine hydro mounts.
Q: What size spare tire can be carried under truck bed? A: Up to a 35” tire. Anything larger will require modification.
Q: Will there be a bed extender available? A: No bed extender will be available. But, the tailgate in the half-open position does provide some extension and it can support 1800 pounds in this position.
The underseat storage cubby / carrier is removable via four bolts (same bolts as hardtop).
Backseats can be locked with a key (using same key as center console and glove compartment).
Front facing off-road camera will feature grid lines.
There is a Gladiator specific Easter egg ("❤️ 419") in every bed.