Little Big Planet PSP

HELP!!
Can anyone tell me the release date for LBP PSP?
I've been seearching the net, but dates differ from 25 September, 12 December, 18 October and 18 November.
Can anyone help me?
Thanks in advance.

LBP PSP coming to US next month News | PSP | Eurogamer

Thank you. But can you get a European date?
Thanks.