Well for the sequel you have to look at how long development, pre-production, production and post-production takes.
My guess on the sequel:
2013 will see the development of the script.
first 4 months of 2014 will see pre-production (set construction, casting, location scouting and other stuff)
Mid to llate 2014 will be production (filming)
late 2014 to early 2015 will be post-production.
My guess is the film will have a summer release in 2015