Arizona is gaining a ninth congressional district this year, and it is certain to be based in the Phoenix suburbs where the population has exploded recently. Generally it is believed that the new district will be Republican-leaning as are most of the Phoenix burbs, but it is actually possible to draw a compact new majority-minority district in the Phoenix area.
The new 9th district (light blue) is 39% White and 50% Hispanic. It encompasses east Phoenix areas drawn mainly out of the 2nd and 3rd districts with a little taken out of the 4th and 7th as well. To make up for that population loss in other districts, the 4th has taken on Tempe, which increases the white percentage in the district to 29% but those are mostly liberal white voters so it should be okay. The 3rd takes on some areas that had previously been in the 5th, and the 5th grabs Chandler from the 6th, evening out the population in the Phoenix area. Some other minor changes have taken place across the state to even out population changes, but nothing major that would change the partisan balance of power in these districts.
This new plan actually includes some things that conservatives could like. After losing Tempe and gaining Chandler, the previously swingy 5th district is now probably solidly conservative. The 2nd and 3rd have lost a considerable portion of their Hispanic populations, making them much safer for the GOP (this should help scandal-tainted rep Ben Quayle). And the new 9th is probably competitive for the GOP in a good year. I would consider it slightly leaning D, but with the gap in turnout between white and hispanic voters and the fact that SB 1070 may have changed the racial demographics slightly here since the census was taken mean that in a low-turnout midterm election this district may be close to a tossup. The only reason that the GOP would have reason to fight this district is that there is a possibility Rep Trent Franks has been redistricted into the 9th district under this map. He lives in Glendale, most of which is in this new 9th district. I highly doubt he would want to run in a majority-minority district, so he would probably fight this plan heavily. If this was a VRA-obligation, however, that might not matter.
As to whether the VRA requires this district, it may be open to interpretation. Important to note is that Arizona is one of the states that requires section 5 preclearance by the DOJ, so the Obama admin has a good chance to argue for the creation of a new majority-minority district if they wanted to. This district is pretty compact, but I think that Arizona could still make the case that you have to go out of your way to draw something like this. Overall I'm not sure if the Obama admin wants to challenge this in court, and I'm not sure if the Roberts court would be receptive to arguments for a new VRA district in Arizona, but I hope that the Obama admin at least tries here, because there is a chance they could succeed.