We just confirmed Samsung Galaxy S4 Value Edition's (GT-I9515) existence on our twitter account, and it looks like a Chinese source has also acknowledged this device along with a few other devices and revealed some of their information, as well. The information was leaked on Sina Weibo, a Chinese microblogging website.
According to the leaked information, the Galaxy S4 Value Edition (GT-I9515) will come in 7 different colour variants: Black, Blue, Red, Purple, White, Pink and Brown, while the Galaxy Tab 4 (SM-T330) will have the same colour options as the upcoming Galaxy Tab 3 Lite (SM-T11): Cream White and Ebony Black. Leaked information also reveals that the Galaxy S5 (G900F) will be launching in the usual colour options of white and black, and will be available in 3 different storage capacities: 16GB, 32GB and 64GB. Moreover, the Chinese source has also mentioned that Samsung's upcoming Tizen device will be launching on February 23 and the device will be featuring a Space Grey paint job.
As always, take this information with a pinch of salt as nothing has been officially confirmed by Samsung itself.