Microsoft announced that
Window vista SP1 released to RTM already with languages of English,French,Spanish,German and Japanese.
The OEM manufactures will start producing the new PC with pre window vista SP1 installed and also start manufacturing process to retail window vista SP1 product,this will available in store in the coming month.
Window vista users can update through Microsoft update in mid-March as optional download to install vista SP1.In mid-April,window vista users who sign up for automatic update will start to receive it.
All the update will be successful install as Microsoft detect don’t have any affected drivers installed,that means Microsoft will not push out the update to computer running those drives.