New Japanese Sonic Adventure DX: Director’s Cut and Sonic Pinball Party movies can be found at the Sega of Japan website (Click here and here).
Sonic Adventure: DX
The SADX page appears to suggest that the name ‘Adventure Field’ has been abbreviated to ‘ADV. Field’, while ‘Action Stage’ has been abbreviated to ‘ACT Stage’ (Could the ACT be a reference to the MD games? Maybe/Maybe not – I’m not sure! ^_^).
Sonic Pinball Party
After watching the SPP movie, I am more excited about the game. It appears to have lots of minor references to elements of the old Sonic games (such as Classic Sonic music) and should be a real treat for Sonic Team fans.
Source: Sega of Japan