What exactly is UE 4.9?

Reading the documentation on Lightmass (which is supposed to be fully GPU supported in 4.26??) and confused by the reference to UE 4.9??

CPU Lightmass Global Illumination in Unreal Engine | Unreal Engine 5.0 Documentation What exactly is UE4.9?

It’s not almost UE5, sadly :wink: It’s a very old version of UE4 instead.

UE4 4.9 is really UE4 4.09… with 4.26 being the most recent release (soonTM).

The numbering is like that.