It appears that Samsung isn't switching from active to passive screens like what LG did. Well, not yet anyway. What Samsung did do, however, is to up their screen size to a whopping 75 inches in the 3D landscape. That's just about 3 inches larger than LG's LZ9700 recent offering.
Akihabara News - Samsung has released 75-inch Premium Smart TV or D9500 in Korea. As the highest-end product in Samsung Smart TV line-up, D9500 is the biggest in size, clearest in definition, highest in performance.
The D9500 monster screen will feature a Black Diamond panel and 240Hz refresh rate. It is said to be shipped with Samsung's QWERTY flip remote as well. More on the D9500 here.