When it comes to the UK, we can all be sure those you mentioned will be flopping sooner or later. The UK doesn't care about the quality of the music, they only care about what seems "new" or "trendy" at the moment.
29th GMA, Ellen, and MTV Britney Day.
April 2nd KCA (appearance and possible performance)
April 3rd MTV Special
April 6th TTWE Music Video
That promo will be enough for 3 or 4 weeks.
She needs to do Leno or Letterman, American Idol, and SNL in the following weeks. Lawd PLEASE make it happen
yesssssssssss!!! Till the World end video is coming