PIO Card Validity after June 2017

[aftergcquestions]

I'm a US citizen and I got my PIO card in 2010 and is valid until 2025. I also have a valid US passport. I'm planning on traveling to India in July 2017, will this PIO card be valid for the travel. I'm hearing that after June 2017 PIO cards will not be accepted and only OCI will be accepted.

Also, how long does PIO to OCI application processing take in SanFrancisco ?

Thanks in advance
Omprakaash