Looks like it’s no news, but here’s the official announcement that GenX and the Gen3 add-ons are now available for DAZ studio 4.5. Former customers can get the updates by resetting the download for their purchase at the DAZ store. I’m sorry that releasing the update took a bit more time than expected.
Besides working in DS 4.5, there are also some improvements and bug fixes in the new version.
1. The morphs are now transferred with an improved scheme to get smoother results in particular for the face (s. image). The improved presets are selected initially by default when loading a figure in GenX. The former presets are still included, they are marked by [1.0] just in case you prefer the old scheme.
2. It happened sometimes that a few single points were transferred wrong, in some cases this ruined the transferred morph, in other cases it was hardly visible. This bug has been fixed, there should be no more errors in the transferred morphs.
3. It is now possible to get morph values (i.e. dial settings) directly from a figure in the DS scene. If you have a character saved in a DS scene or as a DS script, or if you have otherwise problems to load the morph values into GenX, you can now load or setup the figure in the scene and get these values from there.
4. GenX now supports compressed DSF files and has some other adjustments to be compliant with the DS 4.5 file format.
Because of 1. and 2., I recommend to transfer your morphs again to get better results.
Because of 1., you should also update the Gen3 add-ons to benefit from the improved morph transfer. (Edited to add: In particular the Gen3 add-ons for A3 and H3 have been improved to work better in the eye area, e.g. the morph for closing the eyes transfers much better now.)
Click thumbnail to see full-size image
I’ll be downloading when I get home 
