There's no mistaking that Apple is in the house, with the huge, fruit inspired logo adorning the front of the building surrounded by a vibrant Technicolor banner – which may include a hidden message.
The folks over at MacRumors have taken a closer look at that banner and reckon it's made up of stretched app icons, including Games Center, iTunes, iPod, Safari and possibly Stocks logos.
Now it could well be the Apple design team getting creative to produce an attractive backdrop, but of course people are looking for a deeper meaning – with the elongated icons perhaps suggesting the iPhone 5 will indeed sport that 4-inch display the whole world is talking about.
Thankfully there's not long left to wait, with Tim Cook due to take centre stage on Wednesday to unveil what we all expect to be the sixth generation of iPhone.
TechRadar will filling you in on all the iPhone related shenanigans as they happen, so keep it locked here for all the information on Apple's next smartphone offering.
If you have your own theory behind the facia on the Yerba Buena Center then let us know in the comment box below.
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John joined TechRadar over a decade ago as Staff Writer for Phones, and over the years has built up a vast knowledge of the tech industry. He's interviewed CEOs from some of the world's biggest tech firms, visited their HQs and has appeared on live TV and radio, including Sky News, BBC News, BBC World News, Al Jazeera, LBC and BBC Radio 4. Originally specializing in phones, tablets and wearables, John is now TechRadar's resident automotive expert, reviewing the latest and greatest EVs and PHEVs on the market. John also looks after the day-to-day running of the site.