We're learning Salesforce's pending lease at Transbay Tower could now be twice as big as originally thought. (Wheaties work even better than advertised.)

Sources tell us the cloud giant could eat up nearly half the office space at the 61-story skyscraper by taking up to 600k SF. Last week we were the first to report that Salesforce was zeroing in on 300k SF at the First and Mission project, which is set to deliver in 2016. The tower still has no signed commitments as of yet, Hines senior managing director Paul Paradis told us late last week. If the company jumps on 600k SF, that means the tower would have 800k SF of office space left to lease up. A marketing office will open next month to attract more prospects.

Also upping Salesforce's popularity and cool factor around town: Founder and CEO Marc Benioff celebrated the company's 15th anniversary on Friday with a free concert in Justin Herman Plaza starring Janelle Monae. (Above, taken from their social media page.) The sea of people on their lunch breaks also gathered for a good cause, collecting and packing 20,000 pounds of food for S.F.-Marin Food Bank and 22,680 meals for Stop Hunger Now. "A perfect birthday!" proclaimed the Tweet. (The question is, who actually went back to work on the perfect 65-degree day?)