Buddy
No, Shell have not made a takeover bid. They have proposed a scheme of arrangement to acquire all AOE shares (effectively is a takeover but not called one). If 75% vote in favour (by number and number of shares) all shareholders are bound by that.
page 20 of attached document explains it
http://www.camac.gov.au/camac/camac.nsf/byHeadline/PDFDiscussion+Papers/$file/Members_Schemes_DP_Jun08.pdf
