Provide some scaffolding for creation of new plugin and workflow assembly classes - I really liked the ability to right click crm explorer on an entity and create a plugin from there in the - SDK Visual Studio Template - this provided a good starting point when developing a new plugin.
Please see the following regarding v4: https://crmsolutionmanager.uservoice.com/forums/222716-general/suggestions/12402183-crm-2016
XrmToolkit v4 was released today. For more information see https://xrmtoolkit.com
v4 is still under development at this time and does not have a release date yet. It looks like it will be released more likely towards the end of Q1 or Q2.
Phil Adams commented
Is there any update on this?, as currently we are holding of purchasing several licences until this functionality is available.