During IFA RIM showed off the PlayBook 3G+ but did not give a specific launch date for the device. Today you can go to the BlackBerry UK sight and see the device listed as avialable thru Misco UK and Insight UK.
You can now register with Insight UK to be notified when the BlackBerry PlayBook 4G is available for pre-order. We still do not have a release date but it seems to be really soon. Are you in the UK and planing on pre-ordering the BlackBerry PlayBook? Hit the break to get registered