Changes to Chase Sapphire Reserve
On August 26th, 2018 the following changes will go into effect for the Chase Sapphire Reserve:

Transactions that qualify for the $300 annual travel credit will no longer earn points. Since they currently earn 3 points per dollar, you're looking at 900 less points a year.
Priority Pass select access will be limited to two guests per visit. Additional guests can be admitted for an additional fee of $27 each. Although this seems like a negative, a lot of the lounges have been overcrowding lately and this new rule could help with that.
Price protection will no longer be available. This refers to when the price changes on a product you recently bought and is rumored to be taking place for all Chase credit cards.
Overall, these modifications have little effect unless you plan on taking a large group inside a lounge or are an avid user of Chase's price protection service.
H/T: Doctor of Credit