NASA has announced it plans to launch another rover to Mars in 2020, and many in the science community are already pushing for it to be at least the sample gathering and caching part of a sample return effort. Ultimately, they argue, to search for life on Mars, we need to get likely soil and rock samples into the state-of-the-art labs on Earth.
NASA is still defining both the rover and its mission. It will likely be based on Curiosity's design, however, which would presumably mean something like the same complex landing procedure that successfully put Curiosity in Gale Crater. That might be a mistake. It worked once, but trying it again may be pressing our luck.
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