DD,
Having had the press-release clarified, Air 2000 are losing 2 aircraft, over-and-above the 4 leased aircraft that were leaving the fleet at the end of the Summer anyway.
As I understand it the 4 are the Lotus A320, 2 BMI A321s and the B767 that had it's lease extended over the Summer.
The 2 remaining losses will most likely be a couple of the older 757s