Looks like that iHeartRadio Festival tantrum is the last thing Las Vegas will hear from Billie Joe Armstrong for a while longer. Green Day has canceled or postponed all scheduled concerts—including a February 8 MGM Grand stop—the pop-punk trio announced today. A rescheduled date for the Vegas show will be "announced shortly," according to the press release.

"Billie Joe's well-being is our main concern," bassist Mike Dirnt said in the release. "We are happy to say that Billie Joe is doing well, and we want to thank you all for the outpouring of support and well wishes that we have received, and we can't wait to see you all again soon."

On September 21 at the MGM Grand Garden Arena, Armstrong, the band's lead vocalist and guitarist, dropped a string of expletives onstage and ultimately smashed his guitar, complaining over the band's apparently shortened set time and lobbing an insult at Justin Bieber to boot. Two days later, the band announced Armstrong had checked into rehab, "seeking treatment for substance abuse."

Green Day, which released latest album ¡Uno! last month, plans to follow it up with two more full-lengths in 2012: ¡Dos! on November 13 and ¡Tre! on December 11, moved up today from its original January 15 release date.

"We feel bad we had to delay our tour, so to make up for it we want to give our fans the music earlier than we had planned," drummer Tré Cool said in today's release. "If we couldn't be there to play it live for you, the least we could do was give you the next best thing."

Tickets from the original Las Vegas date will be honored at the makeup date. Call the MGM box office at 891-7777 for more information.