Release date & price TBA.
Images are from Gunpla 30th Anniversary's official site.
On the other hand, images of the many limited Gundam merchandises to be available at Gundam Super Expo 2010 announced in mid June:
HG 1/144 G-3 Gundam Ver. G30th - New item. 1,200 Yen (inclusive of tax).
MG Gouf Ver. 2.0 Clear Color Ver. - New item. 3,800 Yen (inclusive of tax).
HGUC Double Zeta Gundam Clear Color Ver. - New item. 2,300 Yen (inclusive of tax).
HG 1/144 00 Raiser + GN Sword III Metallic Ver. - New item. 3,500 Yen (inclusive of tax).
MG Heine Westenfluss's Customized Destiny Gundam - New item. 4,800 Yen (inclusive of tax).
MG Char's Customized Zaku II Ver. 2.0 Clear Color Ver. - New item. 3,500 Yen (inclusive of tax).
BB Senshi Unicorn Gundam Clear Color Ver. - New item. 1,000 Yen (inclusive of tax).
SD Gundam Sangokuden Brave Battle Warrior Shin Ryusou Ryubi Gundam + Hakugin Ryuseiba Launch Ver. - New item. 1,000 Yen (inclusive of tax).
HG 1/144 Gundam RX-78-2 Ver. G30th Clear Color Ver. - 1,200 Yen (inclusive of tax).
HG 1/144 Exia Repair + O Gundam Clear Color Ver. - 2,400 Yen (inclusive of tax).
MG Gundam RX-78-2 Ver. 2.0 Clear Color Ver. - New item. 4,200 Yen (inclusive of tax).
Extended MSIA Gundam RX-78-2 Light Up Ver. - New item. 3,000 Yen (inclusive of tax).
Gundam Super Expo Official T-Shirt (S, M, and L) - New item. 2,500 Yen (inclusive of tax).
Zaku II Cap Damaged Ver. - New item. 3,000 Yen (inclusive of tax).
Char's Z'Gok Cap - New item. 3,000 Yen (inclusive of tax).
Zock Cap - New item. 3,000 Yen (inclusive of tax).
Gundam Super Expo 2010 will be held from August 10th till 19th at Tokyo Dome City Prism Hall.
Images are from Gundam Dot Info.