I'm just wondering whether there is a GPS unit available (or plans for a GPS unit) that's compatible with the OM-D EM-5? Something that writes the GPS location data right to the ORF file would be ideal. I have one that works great on my Nikon D300, but it connects thru the 10 pin wired remote connector. I'm not sure where a GPS unit could connect to the OM-D. It might be wishful thinking on my part, but I've used it extensively when traveling with my Nikon. Now that my OM-D is my preferred travel camera, having GPS available for it would be great! Any thoughts on this? Thanks.