First of all... yes I know there is NO AUDIO so sorry you'll just have to do a little reading. No complaining :)
So Maya 2017 Update 3 was probably the single biggest UV focused release ever. Now coming off the heals of that there is even more new stuff in Maya 2018! Maya Modeling Product Designer Trevor Adams put together this comprehensive review of all of the UV Editing improvements included in Maya 2018.
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