Are all papers published by ACM indexed in DBLP? Will a paper accepted by a new conference, whose proceedings will be published by ACM and indexed in Ei Compendex and Scopus, also be indexed in DBLP? 

In particular, will the proceedings of ICCBDC be indexed in DBLP?
I think this question can be answered via DBLP's FAQ, specifically: What are the criteria for dblp to index a journal or conference? In a nutshell,


DBLP has a venue application and review process that seems to be applied to each newly included venue,
During this process, a set of minimum standards for newly included venues is considered. One of these standards seems to be inherently fulfilled by conferences published in the ACM digital library: ''All full-texts of contributions should be available online (either openly or as a paid service) in an established digital library.''
There are no guarantees for (timely) inclusion: ''Please note that beside the eligibility of a publication venue, the workload and the resources at dblp are always a limiting factor for the inclusion of new venues''.