Mode S will be postponed till 31-03-2007 for IFR
The combined aviation authorities of Germany, France, Switserland and the Benelux will make an anouncement, and to coordinate that, it will be made in january...
Note that the UK is not on the list. According to the latest AIC, ELS will be required, as planned, in designated airspace (London TMA etc.) in March 2005.