NASA Planetary Division Management Responds to Community Concerns, Planetary Exploration Newsletter
"Contrary to statements being made by some individuals in the science community, the recent announcement of the Mars 2020 rover has nothing to do with the current R&A selection rates nor has it impacted the current or projected amounts to be spent in the R&A program. The Mars 2020 rover will be designed to "conduct mobile surface-based science at a site selected for its ability to preserve evidence of life, and prepare for the future return of samples per the NRC Planetary Decadal Survey."
Keith's note: I find it to be a little odd that Jim Green would wait until Christmas Eve to send out his official NASA response - and only send it to one newsletter - not to the rest of the media via PAO. It is sort of hard to reach the space science community using this approach.