The purpose of the notice was explicitly to counter some of the damage from Apple's very public claims that Samsung had clearly copied the iPad with their Samsung Galaxy Tab. Apple tried to damage Samsung by taking victory in advance. When they then lose, it is only natural they face consequences, otherwise they would have no incentive not to the same again.
They chose to take the proposed wording, chop it into two pieces, and inject their own paragraphs that are clearly intended to play up Apple and to downplay and dilute the purpose of the message and create doubt about whether or not there was copying by referring to other judgements, and on top that they are misrepresenting the court cases they mention:
The German court did not find that Samsung had carried out any infringing copying of their design. The US jury did NOT find the Samsung Galaxy Tab infringing. Apple's comment is technically correct, but they are on purpose clearly failing to mention that the judgement is mostly irrelevant to the UK case as it deals mainly with other products than the UK case (which only deals with the Galaxy Tab), and in the one instance where it is relevant, Samsung prevailed.
Apple is free to question the judgement, but doing so by diluting the effect of the very message the judges ordered them to put in place is at best a stupid mistake, at worst wilful attempt at doing an endrun around the court. The only reason they got away with this as lightly as they did is because the judges can't prove it wasn't someone just being stupid. So they've given Apple another chance and given them more rope - if Apple tries this stunt again, someone will be in serious personal trouble.