It's not official, but the lineup for Chicago's annual summer festival Lollapalooza is beginning to leak -- and Lady Gaga, Green Day, and reunited Seattle grunge rockers Soundgarden are expected to headline the three-day event this August, sources tell the Daily Swarm.

This week, Soundgarden announced they will reunite in 2010, Courtney Love discussed Hole's first concerts in 11 years, and Lenny Kravitz talked about his Michael Jackson collabo. Meanwhile, Marilyn Manson proposed to Evan Rachel Wood, and Katy Perry got engaged to Russell Brand.

These stories, plus the week's top news, audio/video, and live reviews, below.

It was a grunge rock class reunion Tuesday night in Los Angeles!

Chris Cornell is teasing us. Is he a mere shadow of his former self, mired in a middling solo career? Or is he still a muscular-voiced rock god to whom we must still pay attention? Or, is he testing the metaphorical waters for something bigger in the next year, like a Soundgarden reunion?

Three-fourths of Seattle's Soundgarden reunited Tuesday night in their hometown, but without singer Chris Cornell, who is about to begin touring for his Timbaland-produced solo album, Scream. Taking Cornell's place was Tad Doyle, frontman of late, great '90s grungers TAD.