As announced a few weeks ago already, Sega will release simultaneously with Sakura Taisen 4 a complete re-release of the series for the Dreamcast, in a special package called Complete Box. Pricing for the item was announced today: the box will retail for 18,000 yen (about $135). The box will have 10 picture GDs (with new designs), which means a bonus GD will be included, possibly the same as the one coming with ST4.
However, the Complete Box will not contain any of the series' DC spin-off games (such as Hanagumi Taisen Columns 2 and Oogami Ichirou Funtouki) or the extra CDs that came with the previous DC releases (such as the preview discs).
Lastly, it seems that this collectors' item will not come with any goods like previously thought. The Sakura Taisen Complete Box will release on March 21st in Japan.