The Mars Reconnaissance Orbiter has returned the first images – the highest-resolution photos ever taken from Martian low-altitude orbit! The pictures show objects as small as 0.9 metres in size. As of October 4, eleven images have been released so far, covering a wide variety of terrain in various locations.
More information:
HiRISE Transition Phase Imaging
New Photos From NASA Orbiter’s HiRISE Camera Detail Diverse Martian Terrain