The March edition of Empire will go on sale on January 29th.
Here's a small tidbit Empire posted regarding the covers and their visit to the set:
And it looks like the guys over at Comic Book Movie were able to track down some scans from this edition thanks to Twitter user LennyUKDeejay.Our cover stars headline the most comprehensive Avengers: Age Of Ultron coverage to be found anywhere in the nine realms (well, the Midgard part of them, anyway). We’ve been down to Shepperton Studios to talk to Joss Whedon and his Avengers, watch the movie come together and piece together the puzzle of how to surpass the most successful superhero movie of all time. Trust us, you won’t want to miss this.You know that thing of no actor admitting to playing a bad guy? Turns out it goes for directors, too. “I’ve been working on a lot of Ultron scenes,” Whedon grinned when we caught up with him, “so I’m very anti-Avengers right now. You can’t write someone if you don’t love them and I’ve come to the conclusion that Ultron is right. The Avengers need to die.”
Sources: Empire Magazine & Comic Book Movie.