Apple is expected to unveil its new iPhone today.
The technology firm is staying tight-lipped, but invitations have gone out for "a special event" in central London which say "Let's talk iPhone".
A similar event is also being held at Apple's US headquarters in California.
Industry insiders have predicted the new phone, which is likely to be known as iPhone5, will have a bigger screen and built-in voice recognition software.
It is not clear when the phone will be on sale in the UK or how much it will cost.
There have also been some predictions Apple will launch a cheaper version of the iPhone4 at the same event.
Thousands of gadget fans queued to get their hands on the iPhone4 when it first went on sale last June.
Apple's flagship Regent Street store opened its doors early at 7am to deal with the demand.
Tonight's event is at the Apple store in Covent Garden, central London.
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