Well i will ask some obvious burning questions regarding 4.5 so please don’t shoot me! 
- Will we finally get, with 4.5, Real-Time GI and fully functional emissive lighting, or at the very least static emissive lighting support as we had in UE3?
- Any word on light shafts working on point lights as they did in UE3 with 4.5?
- Will 4.5 finally fix the issue with materials being swapped for the default material during shader compiling?
- A hair simulation such as NVidia HairWorks would be absolutely amazing, can we expect something like this n 4.5 or in the not-too-distant future?
- Can we expect out of the box video file support with 4.5 as we had with UE3?
- Any updated on Screen Space Reflections working with Translucent materials, possibly in 4.5?
Thanks in advance!