That date is the start of 2010's Tokyo Game Show meaning the site 'will open' for business the first day of the event. Code 1935 it's called.
Well its url isso that's where the Code 1935 bit comes from. That just so happens to be the alternate time period that Sega's Valkyria Chronicles is set in. Sega already registered valkyria3.jp recently. Do you hope for Valkyria Chronicles 3?