My niece recently bought a new white SGS2 from carphone warehouse but it needed replacing as some things weren't working properly. Apparently hers was old stock and the newer versions are actually a different thickness. No idea why they did that. You can't see it in these photos, but compared to mine, it's definitely not as thin. Her official case she'd bought didn't fit the new one, and I think she said neither did her charger. So they replaced her accessories for a charge of £10 but the only case they had which fits is a cheap looking see through silicon case. Glad I don't buy my phones from carphone warehouse.
Sorry about the crappy pic quality, not much light when I took these.