Obviously the biggest news is the announcement of dates for “Glee Live! In Concert!,” which kicks off May 15 in Phoenix, Ariz., and will also hit Los Angeles, Chicago and New York City.

The next revelation about the second half of season one, which begins April 13 (and season two) is that “Glee” is about to get much bigger – in every way possible.

Series creator Ryan Murphy revealed at the 27th Annual William S. Paley Television Festival in Beverly Hills that the main thing fans love about the show, the music, is getting bumped up a notch.

“I keep saying, bigger, better, and no pregnancies!” Murphy said. “In the first 13 [episodes], we did three or four musical numbers an episode, and in the back nine, we do six to eight numbers on average, with more music, more comedy and more Jane Lynch!”

Speaking of Lynch, she’ll finally get her chance to shine in the musical spotlight during the upcoming Madonna episode, which includes 10 songs by the Material Girl. What will the evil Sue Sylvester be doing? “A direct take on Madonna’s ‘Vogue’ video,” says Murphy.

Also rumored for Sue is a new nemesis in the form of former “Saturday Night Live” cast member Molly Shannon. (Now that’s a battle of crazies I’ll be dying to see!)

With spring comes thoughts of love, which will definitely be in the air for the cast of “Glee.” Rachel (Lea Michele) will get a new love interest: the lead singer of New Directions’ arch-rivals Vocal Adrenaline! And in a move that is sure to draw kudos from many quarters and criticism from others, Kurt (Chris Colfer) will get a boyfriend. Murphy has been quoted as saying the pair will quickly become one of the school’s “power couples.”

Now that Will (Matthew Morrison) has bested Sue Sylvester, he needs a new rival. He’ll get one courtesy of guest star Neil Patrick Harris who’ll play an old enemy from Will’s school days at McKinley High. And if that doesn’t sound funny enough, Lynch has also told the press that the on-set chemistry between herself and Harris was so good, the writers went back to the script and added some “sexual chemistry” between the two characters.

Finally, the second half of season one will be stuffed to the gills with guest stars including Idina Menzel, Lady Gaga and returning guest Kristin Chenoweth. Murphy also has hopes of getting Julia Roberts to make an appearance on the show.

Whew! That seems like a lot to stuff into 22 episodes doesn’t it? Producers of “Glee” agree, so next season the show will expand to 25 episodes.

Wednesday, March 17
One eskimO – “The Ellen DeGeneres Show”
The Swell Season – “The Bonnie Hunt Show”
Avril Lavigne, Sarah Colonna, Mo Mandel, Rove McManus – “Chelsea Lately”
Wanda Sykes, Loni Love – “Lopez Tonight”
Free Energy – “Late Show with David Letterman”
Switchfoot – “The Tonight Show with Jay Leno”
Gary Allan – “Jimmy Kimmel Live!” – rerun
The XX – “Late Night with Jimmy Fallon”
Snoop Dogg – “The Daily Show with Jon Stewart”
Metric – “Last Call with Carson Daly”

Thursday, March 18
Jamie Cullum – “The Ellen DeGeneres Show”
Queen Latifah – “The Tavis Smiley Show”
Heather McDonald, John Caparulo, Ross Mathews – “Chelsea Lately”
Lucrecia featuring Andy Garcia – “Lopez Tonight”
Josh Turner – “Late Show with David Letterman” – rerun
Janet Jackson, Orianthi – “The Tonight Show with Jay Leno”
Jonny Lang – “Jimmy Kimmel Live!” – rerun
Gene Simmons – “Late Night with Jimmy Fallon”
Wild Light – “Last Call with Carson Daly”
50 Cent – “Late Late Show with Craig Ferguson” – rerun

Friday, March 19
Chelsea Handler, Melanie Fiona – “The Ellen DeGeneres Show”
Jo Koy, Donnell Rawlings, Jen Kirkman – “Chelsea Lately” – rerun
Daniel Merriweather – “Late Show with David Letterman” – rerun
Barenaked Ladies – “The Tonight Show with Jay Leno”
Ryan Bingham – “Jimmy Kimmel Live!” – rerun
Kara DioGuardi, Air – “Late Night with Jimmy Fallon”
311 – “Last Call with Carson Daly”
Ok Go – “Late Late Show with Craig Ferguson” – rerun

Saturday, March 20
Norah Jones – “Austin City Limits” – rerun
The Ting Tings – “Saturday Night Live”