Fiat-Chrysler is in the middle of re-adjusting the lineup for each of the brands. They recognized that sedans are losing steam in the market, and crossovers are gaining. That's why they discontinued the 200 and the Dart. The only way to make them at a profit was to find a partner in those classes. They approached several other automakers and could not find a match. The Jeep and Ram brands have taken off and are doing record numbers, mainly at the expense of Chrysler and Dodge.
For Chrysler, they kept the two most popular models. The brand that lost out on this was actually Dodge, as it lost it's most popular model. There is a plan in place to add models in the future.
For Chrysler brand, the 300 redo comes in 2019, a Pacifica refresh in 2020, a new 3-row midsize crossover arrives in 2019 (replacing part of the Dodge Journey line), a fullsize crossover (revival of the Aspen) for 2021. They may also get a new Chrysler Neon based on the Fiat Tipo and another minivan that would be electric and autonomous called the Portal.
For Dodge brand, the Charger and Challenger get refreshed in 2019 and brand new versions based on the Ghibli in 2021, Durango redesign in 2019, the Journey gets replaced by a new rear-wheel-drive, two-row performance crossover based on the Stelvio in 2019. They haven't decided on the Barracuda convertible concept based on the Challenger.
http://www.autonews.com/article/20170918/OEM04/170919787/chrysler-crossovers-to-boost-lineup
http://www.autonews.com/article/20170918/OEM04/170919784/charger-challenger-to-get-ghibli-platform