As far as teasers come, this one might just be the most exciting one we've seen so far. There will be a different teaser than the one below to be released at a special IMAX event on April 20th, so for the time being, Zack Synder is getting everyone excited with this one here:

Holy smokes!

Confirmed 4.20.15 #BatmanvSuperman @IMAX special teaser screening events. Limited space. RSVP http://t.co/TasYGlJGig https://t.co/fnxFIERUlv

— ZackSnyder (@ZackSnyder) April 16, 2015