At least as of version 1.5.1, the awesome Vitalets Bootstrap X-Editable plugin has a maximum date for its datepickers of 2015. Why? I dunno. I just work here. But it’s a simple fix.
After you get things rolling by applying the plugin to whatever element, like so…
Change the default maximum year thusly:
$.fn.combodate.defaults.maxYear = 2531;
Or whatever year you want.
While you’re there, you could also change the minimum date to something a little more recent than 1970:
$.fn.combodate.defaults.minYear = 2010;