If you're talking about Spring Air, then it's 2015.
Seeing as you already have the A330-200 (and it's in a much denser configuration), you'd need something the same size/capacity of the existing model, not an upgrade. In that case, I'd steer you towards the 787-8, which has roughly the same capacity as the 767-300ER.
Unfortunately, I cannot recommend you a replacement for the 767-200ER (it's somewhat of a niche aircraft, with no real replacement that has the same range). You can only really go up or down in capacity and range, unfortunately. Closest in physical size going up would be the 787-8, but it would be too much aircraft for some routes. Closest in size going down would be the A321neo, although it would have fewer seats and less range.