Sony announced besides for Japan (250GB PS3 Slim FF XIII also 250GB Sony PS3 Slim bundles, but Amazon UK. also offers now a 250GB PS3 Slim console for £284.99 that will be shipping already October 1st.

The 120GB Sony PS3 Slim sells in the UK for £244.69 and Amazon UK actually bundles a free game and a free HDMI cable with it right now.
250GB will be the limit for game consoles this year. In 2010 the HDD storage game sure continues and we will see 500GB Xbox 360 and 500GB Sony PS3 consoles.
More details on Amazon UK.