Deleting Disabled Keywords In Google Adwords

Post from the Google Adwords Blog

To give you the chance to review and activate previously disabled keywords after the launch of our new keyword evaluation system, disabled keywords have remained in your account for the past several weeks. Next week, they'll be deleted.

So, what should you do? You don't have to make any changes to prepare for this --- your previously disabled keywords will show up as deleted in your account, and you can still choose to re-enable them. However, if you'd like to keep a list of your previously disabled keywords on hand, you can create and save a custom keyword report.