Yes member “paulc” is right that Iberia will phase out their B757´s.
This was maybe first mentioned in interviews with Iberia managers in 2000 or 2001 when asked about the future shape of the IB-fleet.

Sad to hear it because I like to see B757´s in IB-colours…

Ironically there was a interview with a manager at Iberia in May 2004 or so and at this interview the manager said that Iberia plans to operate their MD-80´s “for at least another ten years”. This personally thrilled me (look at my username:-)) and there were rumours that Iberia could take all five MD-88´s of Onur Air (one was leased from 2003 until 2005) to finally expand their MD-80-fleet to 42 aircraft with (in MD-80-terms) young airframes (all examples for Onur Air were manufactured in 1997).

The B757 is surely a very good aircraft in it´s category but Iberia wants to standardize on the A321 in this capacity-range.

Thank you 🙂