They actually have a SDK for Java, Symbain, And Windows Mobile.... I got the Java SDK

But what i think psycoborg is talking about is the TouchWiz SDK. This is the SDK WE NEED!!
Lets look at this logically... Its hard to hack brew (but not impossable

) To run a brew app you need to goto the @metro right? F-THAT!!
We need to customize the TouchWiz UI!!!!! We can simply make widgets to add to the TouchWiz... then drag them out to use them. NO BREW NEEDED!!!! and its all JAVA!!!!!
I got tons of widgets already.
Samsung said they are going to roll out a new version of the TouchWiz, one that is customiziable and suports 3D items. But they dont give a time frame. Also you will have to download or flash the update to the phone. Samsung said it will be available to ALL touchWiz phones. But i dont think metroPCS will allow us to have the upgrade. This way, they keep a tight leash on us, and keep us from messing with the fin (they make no money selling apps and ringers). I already have the tools to update the phone... we just need to hack the TouchWiz to add our own items.
READ:
http://www.gadgetreview.com/2009/02/samsung-to-update-touchwiz-ui-release-at-mwc.html