Needless sensationalization on part of the author of this article !
It is very likely that India will play Pakistan on April 15th but it is not guaranteed at all.
Per the Super 8 schedule, the match on April 15th is D1 vs B2. If Pakistan finishes in top 2 in Group D, it will be D1. Similarly, if India finishes in top 2 in Group B, it will be B2. Note that India will be B2 even if it tops Group B because this assignment is based on ICC ODI team rankings.
But, who can guarantee that India and Pakistan WILL be in top 2 of their respective groups ?