http://www.digg.com/tech_news/Why_th...t_Flash_8_or_9

The simple answer is that it’s out of both Opera and Nintendo’s hands.
If you want to run Flash outside of Windows, Linux, or Mac, you need the Flash SDK (Software Development Kit), which is made by Adobe.
As a result, the Flash SDK is needed to run the Wii and Opera’s mobile browser on phones.
The problem however is, Adobe hasn’t released Flash 8 or 9 on their SDK, and until they do so, there’s nothing we could do about it.