(Adds futures prices, more company news items) LONDON, Sept 16 (Reuters) - European equity futures rose on Wednesday, with the region's stock markets set to be buoyed by gains overnight on U.S. and Asian markets, although investors were expected to refrain from buying up big positions before a U.S. Federal Reserve meeting. futures on the euro zone's blue-chip Euro STOXX 50 index and on Germany's DAX advanced by 0.3 percent, while futures on Britain's FTSE 100 and on France's CAC rose