SOA on the CEBIT 2007 in Hannover

I'm going to visit CEBIT in Hannover this year. One of the aspects I would like to get informed about is SOA. And SOA is a highlight topic on the exhibition this year with numerous events and presented solutions. So I started to look for appropriate exhibitors to plan my visit. IBM, Oracle, Microsoft and Software AG are already on my list. Surprisingly I could not find BEA with its AuquaLogic Suite and TIBCO among the exhibitors. Though there are lot of smaller companies representing SOA sector that go to CEBIT, most of them offering consulting services.