april is usually when they bring out new forms, and so they usually allow people a few weeks to use the old form after april, but i'm sure they brought out a new form in nov...
when did you download it april this year ? and from the IND wesite ?
its up to you to ensure you use the latest app form..
well has your wifes visa expired yet ? looks like you'll be ok if they've asked you to fill the new form in
