There is a lot of speculation that the Sony Ericcson Satio is to get Firmware Update.

I have tried to update today 7^th March 2010, but it says that I have the latest Firmware, my phone is unbranded.

If there is an update it must be region specific at the moment. It may well take longer to filter through to Mobile Operators, who will most probably edit the firmware to their benefit.

Our friends over at Symbian Freak have said that it may well get the following updates:-

Support for WVGA video recording

Upload of pictures to Facebook. It will be possible to upload pictures directly from the picture menu you have on the home screen or from the Media UI.

Youtube video uploading It will be possible to upload videos to Youtube directly from the Media UI

Conversational messaging Conversations will be nicely integrated in the messaging menu in order to easily find and inspire to more conversations with your friends.

DLNA support.  The new software will support DLNA media server for easy transfer of audio and still pictures. (Note that video is not supported)

UI improvements  On top of above, several minor UI improvements have been done in order to optimize the user experience. 

The Facebook application that is now available on PlayNow for free download will be included in the sw.

 In a few days time it should well be available for the majority of Satio users.