Is Minimum Down Payment Changed on Investment Property?

[Weng L.]

For conventional loan, a few years ago the minimum down payment on a 1-unit investment property was 20% (if the borrower owns 1-4 financed properties) or 25% (if the borrower owns 5-10 financed properties). I am not seeing this in fannie mae and freddie mac websites now. Instead, they both allow 85% LTV (i.e. 15% down payment) on purchase of 1-unit investment property:

https://singlefamily.fanniemae...

http://www.freddiemac.com/sing...

Is this true that even owning more than 5 financed properties, you can still use down payment 15% (with PMI) and 20% on 1-unit investment property today?

How much difference in interest rate when down payment is 20% versus 25% on 1-unit investment property?