Littleblue, in our so-called "Great Transition", mastercoins are now termed omnis to reflect the universal nature of the token and protocol. There is no practical or technical difference aside from the name change. The Mastercoin Foundation, incorporated in 2013 in Austin, TX, USA still has custody of the Exodus Fund, of which remains the devMSCs (now presumably to be referred to as devOMNIs or what you wish) and as such, this foundation, which is separate from the newly incorporated Omni Foundation in Switzerland, has responsibility for the disbursement of this fund towards whatever the board as representatives of the community deems to be in the community's and protocol's best interests. The Omni Foundation, on the other hand, is responsible for representing the sponsors of our protocol to direct software development according to the needs of said sponsors that use the Omni Protocol.

Any further clarification needed, please ask away!

Antony