I rate the exam as Medium.You have to know very well about soap,wsdl,xml schema,JAX-RPC,JAXR,JAXP,JAXB,endpoint design and security feature SAML,XKMS,xml digital signature etc.I think drag & drop questions are very important.I like the D'D questions.
The passing score for beta should be 60-65%.
My chances of passing is medium.Best luck for all the exam takers.
Abu Naser Mohammad Muinuddin
(SCJP 1.2,MCP in C#)