Ameblo via VGChartz is reporting that the first day sales estimates in Japan on July 17th, 2008 as follow:
First Day Sales : The numbers in () shows the shipments info.
* DQ V (DS): about 420k (about 700k)
* Gundam Battle Universe (PSP): about 98k (about 160~170k)
* Tears to Tiara (PS3): about 20k