Maya Modeling Product Designer Trevor Adam's put together some nice overviews of the new modeling tools and uv tools in Maya 2017 Update 3 RETOPO UPDATES
UV UPDATES
new hotkeys
delete : delete UVs
4 : wire frame
5: shaded
6: texture
7: UV distortion map
8: Shell borders
9: texture borders
shift X: cut
shift S: sew
shift + ctrl + X : new shell
ctrl U: unfold
ctrl L: layout
simplified toolbar
tool tips updated
tool tips have popup images and movies
certain tools have LMB and RMB funtionality
shaded LMB for shaded
shaded RMB for multi colored shells
shift click for options
menus reorganized again... for the better !
ability to quickly choose the viewable texture
scroll bar for texture dimming
disortion can be shown at same time as checker
many more checkerboard options
better organization of uv sets
uv map editor added to the UV toolkit
isolate select updated
wheres the hotkey !
custom shelf !!!!!!!!!
shift + ctrl to add to shelf ( just like regular maya)
stepped move added to move tool
J to envoke
scale now as option to prevent negaive scaling !
uv marking menu updated for the better !
vtx, edge, face contextual marking menus !( updated)
a lot of the upper bar tools have been improved and moved to the UV Toolkit
thanks to Roger An for the IF credit list: Imaginary Forces: Creative Director: Dan Gregoras, CG Lead: Chris Vincola, 3D Modelers: Roger An, Muzi Lee, Hannah Sung, Animator: Joerg Liebold, Lighters: Cody Chen, Ken Lee, Compositors: Tamir Sapir, Manu Gaulot, Ari Reisner.
I remember first seeing this , and all the behind the scenes.. so awesome. who remembers the fire hydrant !
You'll first notice the lack of the mult level icon bar from the top of the UV editor, and that the tools have all migrated into the new UV ToolKit. I think the best bet is going to be to take the tools you like,and put them on the new UV editor shelf .. unless you are a fan of the toolKit style of controls. I'm digging the new Color By Shell option to show the different shells, and while I still prefer to select my edges, and then cut UVs, having the cut UV tool work interactively in 3D space is a very nice addition.
Senior Techincal Specialist Steven Roselle takes us through some of the new UV tools and UV ToolKit in this video