Quantum Apocalypse has been recently released by RHItv as an "On-Demand World Premiere". What that means is that RHI's affiliate cable networks such as Comcast, COX, Cablevision and Time Warner Cable can now offer it via their On Demand / Payperview services. If you live in US and you subscribe to one of these cable networks, you may be able to watch it today.
The movie is $3.99 On-Demand rental on most affiliated services.
Some more details and a trailer here.