A family member received the following Welcome Back promotion via e-mail today (I tried to register for it unsuccessfully):

A WELCOME BACK BONUS
IS JUST THE BEGINNING
COME SEE OUR LATEST ENHANCEMENTS
AND CHOOSE A $25 VALUE REWARD CARD
OR 2,500 BONUS MILES.

Because you’re a valued SkyMiles member, we’d like to invite you to come back and see for yourself the many ways we’ve been working to improve your entire travel experience.

And, when you book and fly by February 29th, you also can choose your Welcome Back bonus: a $25 value American Express®-branded prepaid reward card or 2,500 bonus miles.

Some of the recent changes we’ve made include:

• The ability to track checked bags online

• The largest fleet of Wi-Fi-enabled aircraft in the world

• New and updated Delta Sky Club® locations in Atlanta, New York (LGA),
and Seattle

• The Delta app for iPhone®, BlackBerry®, Android™, and Windows® Phone

• Miles that don’t expire

To register, simply enter your SkyMiles number and select your bonus choice above.