Italian premiere:

The new "Celebration" video will have its Italian premiere tomorrow, September 1st, on the online website of Il Corriere della Sera.
The videoclip directed by Jonas Akerlund has been previewed to the media today and it will be exclusively available on www.corriere.it tomorrow from 8 AM local time.
Talking about today's preview Corriere.it mentions a super sexy Madonna, a love profusion with model Jesus Luz that will certainly let the press go crazy, and the guest appearance of Madonna's daughter Lourdes that the Tribe readers already know about.

UK: premiere:

Fans wondering about where and when the "Celebration" videoclip will premiere on UK television will be happy to learn that GMTV's Carla Romano will be live from LA with the Queen of Pop's new video on Tuesday, September 1st during GMTV Today between 7.30 and 8.30 AM.

German premiere:

The new videoclip directed by Jonas Akerlund will air on German channelsMTV and VIVA on Tuesday at 2 PM local time.

Source: MadonnaTribe