The new OM-D E-M1
Micro four thirds fans should be in heaven this past 6 months with multiple camera introductions from both Panasonic and Olympus including the Lumix GX7, Olympus E-P5 and now the E-M1.
This camera takes the E-M5 to a new level, super build, new 16mp sensor, improved weather sealing and ergonomics, large high res view finder, the ability to use auto focus with Four Thirds lenses (with adaptor).
This is a Pro level camera and the glass you can get for this camera is definitely to die for, all the M. Zuiko that has been announced and upcoming, like the 12-40 below and the announced 40-150 f2.8.
The nice thing about the Olympus gear is you can set up a system for 1/2 the price of Canon or Nikon. I would love to own the Panasonic 7-14 f/4 along with the 2 lenses announced above with the E-M1, pretty nice travel kit, add some of the excellent M. Zuiko primes like the 75 f1.8 and you are set.
This is definitely the way to go if you can't afford the equivalent Canon or Nikon setup or are tired of carrying around all that weight.
Recently released from Panasonic the GX7 will be the E-M1's competition.
The new M. Zuiko 12-40 f/2.8 (24-80 Equivalent)
Olympus road map
Some people that are not going to be happy are the legacy Olympus people, although this is an upgrade for Micro Four Thirds as well as Four Thirds owners, some people will never be happy without an optical view finder, even one as good as this and I can't blame them, I don't think I would, to qualify that, I use a 5D so I'm set for photography that I require an optical view finder for, so for me to use this camera for travel and hiking, I would be ok, because I can fall back on my Canon system.
see DPreviews preview here
Ming Thein review here
Robin Wong review here
Luminous Landscape here
Tech Radar here
first impressions The Phoblographer here
Olympus web site here
Understanding Micro 4/3's White Paper