In the SEW Forums, moderator OptimizeOnline posts about Google beginning the second phase of a beta test allowing longer descriptions in AdWords on the Google Network
Basically, Google AdWords will up the description character limit to 200 and then test the CTR rates of those ads versus the original ads. OptimizeOnline says that some advertisers will be invited to "beta test in mid-August and may continue it into October." The only variable that will be changed in these tests are the ad descriptions, the "the title, display URL, and destination URL of the ad will remain the same."
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.