Wow, just seen this this announcement from Musikmesse 2013, about the update to the Zoom H4N (which I have been using for years). The interchangeable microphone format is fantastic news!! I personally am very excited about the M/S option, just wonder what the capsule is like!! This is going to make working with a DSLR for filming very interesting indeed. I wonder what the price is going to be!The current information is

Zoom H6 Handy Recorder

• The world's first handy recorder with interchangeable mic system
• XY mics capture remarkable stereo depth and clarity
• Mid-side mics provide continuously variable stereo width
• Four XLR/TRS inputs for external mic/line connections
• Up to six channels of simultaneous recording
• High-definition audio of up to 24-bit/96kHz
• 6-in/2-out USB audio interface
• Over 20 hours of operation with 4 AA batteries
• Supports SDXC memory cards up to 128GB
• Optional Shotgun mic and external XLR/TRS inputs available

PeaceNeil