2013 is here and we're kicking off the new year with new features and UI updates to improve your Bing Ads experience. We haven't forgotten our dear API users, and have included a couple updates to your sandbox test environment in this month's release.
Data Purging (available across all markets). Data in your sandbox will be now purged 30 days after it has been created to limit capacity constraints. Developers who need to work on the sandbox for longer than a month will need to create tools that pre-populate their sandbox account with data before doing any development against the APIs in the sandbox.
Faster User Upgrade (available across all markets). Upgrading a reseller account in the sandbox used to take up to 2 weeks. Process improvements have reduced this timeframe to within a few days.