That's an additional reminded to upgrade before the regular Product Listing Ads (PLA) campaigns are retired.
Bulk Uploads: You now have the ability to download a product group report, edit your bids and destination URLs, and import your changes using bulk uploads.
AdWords Editor: We’ve heard your feedback, and with the latest version of AdWords Editor, you can edit your bids and destination URLs for individual product groups at scale. At this time, AdWords Editor doesn’t support the creation of Shopping campaigns or product groups, so please plan time to create your campaigns and subdivide your product groups directly in AdWords. Google Shopping Campaigns Get Bulk Uploads and AdWords Editor Access [adwords.blogspot.com]