As per twitter handle of CBEC there is Substantial reduction in documents required for import & export has expedited the clearance process and contributed in ease of doing business in India.
1. only three documents mandatory for general import and exports.
2. Packing list and commercial invoice merged into a single document for Customs.
3. No need to submit SDF form with shipping bill (export declaration).
4. Other documents to be submitted for import and export of special nature under preferential agreements.