Offer is now reduced to 500 points.
Even though I've already confirmed the information (and received 750 bonus points), I received a new email.
As part of the integration of Southwest Airlines® and AirTran® Airways, Rapid Rewards® will be the loyalty program of the combined airline effective November 2, 2014. When the A+ Rewards Program ends, your A+ Rewards information will be transferred to Rapid Rewards and your combined activity will be reflected in your Rapid Rewards account. To facilitate this process, we have identified a Rapid Rewards account that may be yours. Please verify your A+ Rewards account(s) and your Rapid Rewards account so we can link them together. This will help ensure your A+ Rewards Credits are accurately reflected in your Rapid Rewards account once the conversion begins on November 2, 2014. Plus, if you complete this verification by August 13, 2014, you’ll earn 500 Rapid Rewards Bonus Points!