[flopto]

TL;DR: 5 qubits as a service. Interact with them on your tablet.

From the press release: "The quantum processor is composed of five superconducting qubits and is housed at the IBM T.J. Watson Research Center in New York. The five-qubit processor represents the latest advancement in IBM’s quantum architecture that can scale to larger quantum systems. It is the leading approach towards building a universal quantum computer." (http://www-03.ibm.com/press/us/en/pressrelease/49661.wss)

From the demo video: looks like you can use hadamard and CNOT gates as well as measurements. Somehow it sounds like you can also apply oracles (not sure how you specify what they are when it gets run). (https://youtu.be/pYD6bvKLI_c)

[Strilanc]

The oracle is just a circuit that negates one of the amplitudes. You specify it just like the rest of the circuit.

They use a trivial oracle circuit as an example. But Grover's algorithm works for any oracle circuit, so in principle it could be a circuit that verifies if its input is a proof of the Riemann hypothesis.