The promotion will specifically say if it is double points toward Select. So far I haven't seen anything for this year. I was targeted and signed up for it last year. It started in early November.
It didn't exactly work as advertised. It took almost four months and numerous phone calls to finally get Select applied to my account.
Here's last year's thread:
http://www.flyertalk.com/forum/showthread.php?t=620414