SABMiller Plc rejected an informal takeover offer from Anheuser-Busch InBev NV of about 66.4 billion pounds ($100 billion) that it considered too low, according to people familiar with the matter. SABMiller today released a surprise trading update nine days earlier than planned, in which it announced that beer volume had returned to growth in the second quarter, helped by Africa and Latin America --- a trend that could figure into a sweetened offer from AB InBev.