At IBC 2014, Avid announced Media Composer's new capability to edit natively in 4K as well as Avid Resolution Independence, which allows editors to collaborate fluidly regardless of the resolution they're each working with.
From the Avid blog, "Now, by editing 2K/4K/UHD media natively, video professionals can reduce transcoding tasks, offline/online workflows, and spend more time on creative storytelling, and deliver projects on time and on budget. But how will all this be implemented in Media Composer? Here are some details, from the demo by Luc Amiot, Senior Product Designer with Avid."
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