Hints of a Sony Ericsson W750

There is a mysterious W750 Walkman handset that has not one but two mentions in the Sony Ericsson's press release on Activesync. The above pic is from the press release and I circled where the W750 appears. Apparently this W750 is a Walkman phone and to be available Q4 this year. I am ruling out typo (mix up with Z750) because the the Z750 is mentioned there. It still could be a typo or it could be SE giving us a hint on a future Walkman phone (Walkman HSDPA version of the Z750?)