This is want they sent me today:
Dear xxxxxx,
We created Rapid Rewards® because we think you deserve to actually feel rewarded. And, from time to time we must make some updates to our program. Beginning April 17, 2015, the number of Rapid Rewards Points needed to redeem for certain flights will vary based on destination, time, day of travel, demand, fare class, and other factors. However, there are still many flights which will stay at the current redemption rate. And don’t forget that when fares go on sale, so do the points needed for redeeming for a reward flight on those fares.
As an active Rapid Rewards Member, you know first-hand about the great benefits of our frequent flyer program including:
Unlimited reward seats
No blackout dates
Points that don’t expire1
You may also know that we’re all about creating flexibility for you to use your Rapid Rewards Points:
We don’t charge a fee of any kind if you wish to change or cancel your reward flight at any point2.
We don’t charge a fee of any kind for you to use your points, even if you are redeeming at the last minute3.
And, there is no minimum point balance requirement to redeem for reward travel.
One thing we’ll never change is our continued goal to bring you the best rewards program in the business.
Thank you for your business and continued loyalty.