If you're talking about this bolded below - imo it just plural for varients of eVU ie silverscreen.

''Mezzo can provide the widest range of Portable Media Players approved for IFE. Content including movies and TV from all studios, games and with local language programming; A range of airport based operations including battery charging and content loading; A range of Marketing Services including crew and ground staff training, acquisition of advertising and passenger promotion via mobile, online and print.''

From 6-06 PR, '' MEZZO'S flexibility and unique full service approach to handheld IFE provides revenue and brand differentiation as well as cost effective solutions for airlines.''

As per 'handsets' well they could be tailoring them with different function sets depending on an airlines want/needs -

Where do you gather this info from: 'Mezzo already has other offerings besides e.Digital's'''?

From the 6-06 PR we'r their exclusive proviver,,, n i might ad;

Dave Sampson, chief executive officer of MEZZO said,
“We place a high value on e.Digital’s experience in delivering for this market place. eVU is a culmination of years of experience that translate into a robustly designed media player that can be handed out to passengers time and time again, which is exactly what the industry and MEZZO needs. In a market where other products appear to offer a similar proposition, reliability that can only be built on experience, will remain the key element in determining success. We expect eVU to quickly become the workhorse of the handheld IFE industry.”

emit... wind-socking-it again... lol