A special version of this kit, "HG Gundam RX-78-2 Ver. G30th Green Tokyo Gundam Project" will be a limited item available at Sunny Plaza (太陽の広場), at the park when the statue if officially open for public viewing.
It's the regular kit bundled with a special display base similar to that built for the statue and a 1/144 scale figure of Amuro Ray (12mm tall). The price is 1,500 Yen (inclusive of tax).
Also, it's revealed that the first batch of release for the regular version of this HG kit will come with a special "Gunpla Mini Book" (ガンプラミニブック), also available for the special edition to be sold at Sunny Plaza.
July 11th release, 1,260 Yen (inclusive of tax).
All images from GA Graphic. The official announcement can be found on Bandai's official site.