A report in Japenese newspaper Nikkei appears to be claiming that the Nintendo DSi is getting larger screens. The handheld gaming device is coming up to 1 year since its Japanese release, but there's apparently been a few older gamers complaining that they couldn't see the screen properly.
As a result, the paper says that the screen's getting an expansion - from 3.25-inches diagonally to 4-inches, so quite a sizable update. It's due to replace the current model at exactly the same price, though it's not clear whether the device's screen resolution will also be increased to match.
Whether it'll make it across the seas to Europe and the USA remains to be seen. Nintendo doesn't have the best track record of bringing small console updates to their international users.
UPDATE: This has been confirmed by Nintendo.