OK so take this as you will FWIW...
I had applied for and received CSR in May 17, with the points posting to my account in the statement date which closed July 11, 2017. Figuring I have nothing to lose as m app will just be denied if not, I applied for CSP (after downgrading my CSR to a freedom flex) today, and was in fact denied. However since there was no reason given I wanted to make sure it was because of the 48 months so I called Chase cust service. They confirmed that my app was denied for that reason, and the guy suggested that I apply the first week in August. I asked him if this offer would still be around in August and he said "Yes, this offer is now the permanent offer for CSP".
(I'd handicap the odds of that being true at >1%, but hey....)
I would like to know if someone knowledgeable (
@Dan) could tell me though, is that true usually that I need to wait till the beginning of the next month, or should I be able to apply anytime after July 11? Appreciate the help, thanks.