Well here is what's planned aircraft wise For Summer 2014 according to Jethro (
http://www.jethros.org.uk/fleets/fle...airlines.htm):
A320 X10
A321 X27
A330 X2
B757 X3
Airbus A320:
2 A320's proposed from other carriers for replacements for G-OZBB & G-MONX.
Airbus A321
2 A321's on order. One Due March and One Due April. Both fitted with Sharklets. Note that this is not the order of the A321's for Summer 2015, those are still due 2015 as planned.
4 A321's proposed from other carriers.
G-ZBAD & G-ZBAE are apparently to be fitted with sharklets as well. I don't think it has been confirmed though