This morning, Verizon officially announced the Galaxy Stellar 4G, a mid-range handset that will be available beginning on September 6th. Samsung is running two steps ahead, as the company just released the kernel source code for the device. This basically means that ROM devs and kernel hackers can download the source and have tweaks in place before the device is even released.
Also newly available on Samsung's Open Source Release Center is the kernel source for the Galaxy S Duos, a dual-SIM handset recently announced for the European market.
If you're so inclined, hit the respective links below grab the downloads.