The MessagePad 120 shares the same case styling as the MessagePad 110 and MessagePad 130. Improvements over the previous model included a choice of memory configurations, socketed (upgradable) ROM, a nonglare screen, an updated operating system, and bundled third-party software.
The code name of the MessagePad 120 was Gelato, due to the fact that it was available in two memory configuration “flavours”. The MessagePad 120 is commonly referred to as an MP120.
Apple Support: Newton MessagePad: MessagePad 110/120 Differences