Some information from ComicBookMovie. Take it as a grain of salt but it is what it is.
Henry will be getting a haircut and will dawn the imfamous curl:
"General Napier tells me, Henry Cavill will be sporting a new haircut in Zack Snyder’s untitled Superman/Batman film. His Kryptonian locks will be getting a trim. The shorter 'do will resemble Superman's look in Alex Ross and Mark Waid's Kingdom Come, minus the grey hair. An image of Kingdom Come Superman is in the banner image above. Oh, and that hairdo includes Superman's trademark "S" curl, which was absent in the first film."
One reason for the delay:
"The reason for the delay is multifaceted. While I'm not at liberty to discuss most of those issues at this time, I can tell you that one issue is budgetary. There's a concern regarding Wonder Woman's home, Paradise Island (aka Themyscira). Executives are debating whether to feature the island, which would require massive VFX, or merely referencing it. "
How WB will tackle Marvels famous cliffhangers:
"Last week, Mario-Francisco Robles of Latino Review reported that "Batman vs Superman and Justice League are going to be shot back-to-back. He also said, Batman vs Superman would end with an "insane cliffhanger/teaser that leads right into Justice League. I'm told by General Napier that shooting Batman Vs. Superman and Justice League back-to-back is being considered but no official decision has been made at this time. But, I was also contacted by another source, who requested anonymity, and he told me Justice League is a go, and will be released one year after Batman Vs. Superman.
As for the cliffhanger rumor? General Napier, tells me that's very much true. Cliffhangers, will actually will be one key component in WB's master plan to dethrone Marvel Studios. WB realizes that Marvel films are famous for their mid- and post-credits scenes, and have no interest in copying from Marvel's playbook. WB's plan, is to end each of their films with a cliffhanger, setting up the next film in their cinematic universe. WB also wants to do short films for their lesser known characters. These short films would be played at the end of each film. That's a pretty interesting way of taking on Marvel's trademark post-credits scenes."