Metro finally has em now! They haven't trickled down to the privately owned stores yet, but the corporate stores should have them. Hoping that the T-Mobile root works for Metro as it seems thats the model they're selling:
On Monday its started selling the T-Mo version of the Samsung Galaxy S 4. The $549 price tag may be a bit steep for many of Metro’s prepaid customers, but T-Mobile is demonstrating that it isn’t reserving the latest and greatest devices for its main brand.