We will certainly be keeping our eyes peeled for a possible announcement later today, but in the mean time it looks like Google has “leaked” more clues about Google Drive on its support page for Google Docs which reads:
Tip: If the transfer involves a very large number of documents, you may want to notify the new owner and check that they have enough storage capacity to accommodate the transferred documents. (In the new owner’s Google Drive on the web, click the Upload button to see the amount of storage used/available).
Check back with us some time later today for updates and to see if this latest report about the possible launch of Google Drive pans out.