Siri as mentioned by Apple is still a beta software, I think the reason it is still in Beta is because of a few reasons.
Firstly, Siri is almost a ground-breaking Technology, the ability to understand real-life English usage, when you don’t have to speak in a weird way in order for Siri to understand.
Secondly, Siri is only available in a few language, and is mainly US and UK English. For Apple, they are targeting people around the world, thus I’m sure Chinese, Japanese, French and many other language are in their road map. Thus they won’t deem it as a complete product before people from around the world can use.
Siri vs Asian
So what will happen now if people in Asia uses iPhone 4S now? The Siri results may vary depending on people to people, but I would think that the result won’t be as good as people in the US, as our English in asia have our own Asian Accent.
So let’s see how will Siri fair against, Asian Accent like Malay, Indian and Singaporean?