We're working out what we think - we'll add our view here!
Snow Peak says:
Our new and improved Titanium Mini Solo is bigger and badder. With a complimenting cup that can hold almost twice the volume of the original Mini Solo, a more streamlined handle design, a slightly larger pot, and a new silicone tab that can be grabbed without a hot pad. As with our previous Mini Solo, the pot is designed to hold two 110-g fuel canisters or a GigaPower stove and a 110-g fuel canister. ( *These fuel canisters are not yet available in the UK)