A follow up to our post a week ago: A source close to the deal has confirmed to us that Google has closed the acquisition of GrandCentral and will be announcing it this week, probably today or tomorrow. Acquisitions are generally announced after the close of market, so look for this after 1 pm PST on the Google blog or in a press release (or both). If not today, possibly tomorrow. We have been unable to get the company or Google to comment on this, but our source is solid.

We still don’t have confirmation of a price, but we’ve heard it’s in the Jotspot range – $50 million or more.

When the deal is announced we’ll hopefully hear details on planned integration with Gtalk, Gmail, etc.

Our overview of GrandCentral features is here.