From the Mezzo website link to the "coming soon" XL.com ( XLONE flights). There are two other types of flights, short and long haul. They also offer a personal entertainment device wording. Perhaps the coming soon wording is now over. Or is it something that is coming soon.
You can link to: XL.com and also to http://www.mezzo2go.com/
ONE BETTER
Enjoy a choice of 3, three course menus with dessert, cheese and crackers accompanied by warmed rolls, fine wines, port, liqueurs and chocolates before settling back to watch a selection of the latest shows and movies on an individual hand held entertainment centre. Wake up to a continental breakfast / light meal served with tea, coffee and warmed sweet and savoury pastries.