Both cases will be available next month.
In addition to its Obsidian 250D mini ITX case, Corsair also announced two full tower PC cases, the Graphite Series 760T and the Graphite Series 730T. The 760T is Corsair's new flagship Graphite case and features one transparent side panel and one opaque side panel that are both hinged in the back. These panels sit into a steel frame and roof. The 730T is the same case but with steel side panels as opposed to the windowed 760T.
Both the 760T and 730T boast nine expansion slots, six 3.5-inch/2.5-inch combo bays (across two modular hard drive cages), with four tool-free 2.5-inch side-mounted cages for SSDs, three tool-free 5.25-inch bays, 2x USB 2.0, 2x USB 3.0, thumbscrews for all expansion slots, and cable routing with tie-downs to keep things tidy.
As for cooling, you're looking at three AF140L 140 mm fans, room for up to eight fans in total (three 120 mm/140 mm up top, two 140 mm/120 mm in front, one 140 mm/120 mm in the rear, and one 120 mm down bottom). Radiator compatibility is 360 mm or 280 mm up top, 280 mm or 240 mm in front, 120 mm down the bottom, and 140 mm or 120 mm in the rear.