Just a quick post some time in last 3 hours the update to ICS has become available in UK and Australia. I had to do an update check after a friend in UK emailed me a couple of hours ago 7th May 2012 7pm Australia, UK 10am to say he was now downloading ICS.
The download is very slow only 8 megabytes in 10 minutes, looks like I will have to leave it running all night!
Will let you know how it goes. Just make sure you have room on the SD card for the file and some work space! I have no idea if the updater check the memory before starting the download, if any one knows please make a comment.