It sounds like it. According to a fact sheet from the White House:

 The initial, six month step includes significant limits on Iran’s nuclear program and begins to address our most urgent concerns including Iran’s enrichment capabilities; its existing stockpiles of enriched uranium; the number and capabilities of its centrifuges; and its ability to produce weapons-grade plutonium using the Arak reactor.

https://twitter.com/MajorCBS/status/404445102061256705