The latest Windows version 6.55 supports these new cloud services:
DropBox, Google Drive, Box.net, OneDrive, Rackspace
Services we have been supporting for a longer while include:
Amazon S3, Amazon Glacier, Microsoft Azure, Google Docs
In addition, any cloud service that can be accessed via WebDAV, FTP, or SSH/SFTP can be used.
Google Drive is essentially a replacement for Google Docs. It will basically see the same files, so you could simply switch an existing profile over from Google Docs to Google Drive. An advantage of Google Drive is that it can retain the Last Modified timestamps of files that you upload with Syncovery. Google Drive also implements the choice of using the Recycle Bin for deleted files or not.