The Softbank Hawks announced today that they were changing the name of Fukuoka Yahoo! Japan Dome (Yahoo Dome) to Fukuoka YafuOku! Dome (YafuOku Dome). The name change will go into effect on February 1, 2013.
Official Full Name: 福岡 ヤフオク!ドーム (That is a half space, not a full space between Fukuoka and YafuOku)
Shortened Name: ヤフオクドーム
English Spelling: FUKUOKA YAFUOKU! DOME
Source: official announcement