Disclaimer: All items shown in this post are retrieved from the game files in a raw form. While (sometimes very) educated guesses can be made about their purpose, their intent and release status is known only by the devs themselves. Some of this will be in the next patch, or the next 3, the next year, or never see the light of day. Overall, it’s not in the game until it’s “in the game.”
Also, it’s primarily models, as they are the most noticeable changes, and the most interesting to view. If there are any effects or code changes, they are generally tied to the models anyway. Specifically for this patch, the models are really the only new content anyway.
Now, lets get down to business. In this patch, there was a lot of files relating to the upcoming ANT update, as well as some other mentioned, but unannounced content like the Colossus tank. There is also the usual Player Studio Cosmetics and other general content.
(Note that these are approximate renders, as the textures do not appear to be complete on these.)