Google Adwords Tracking will also track Overture ad campaigns
Update on the new Google Adwords, in effect now: Improved Adwords Conversion Tracking so that you can track conversions not just from Adwords, but also Overture, emails, banner ads, and all other sorts of online advertising campaigns. This allows the merchant to compare the campaigns against each other.
Yes, you'll be able to track Overture campaigns within your Google Adwords account.
If you have an Adwords account, you can read more information under Campaign Management | Conversion Tracking.