At long last, Unreal Engine 4.5 has been released! Epic has been porting the new UT over to 4.5 for a while now which has made it difficult for subscribers (and UT project fans) to stay in sync without recompiling engine source.
We can now finally upgrade the engine and start syncing the UT project again. Version 4.5 brings significant capability into the UT project with the most prominent being support for bots.
Read more about the updates on the HERE.