February 15, 2011
Starting in mid-January when the audio was released, searches for "britney spears" jumped to a level that's higher than they've been at any point in the past 12 months.
The chart below shows the jump in views for Spears' YouTube channel since the teasers began getting posted. While the daily averages have decreased from the first view days, they're still in the hundreds of thousands and Teaser #11, which was posted yesterday, is currently among Tuesday's Most Shared videos.
Anticipation for the video is certainly being built, but we won't know until Thursday, when the full video is to be released, whether or not that buzz will translate to a huge viewer draw.