The mesh primitives have been revisited, improving their usability and pushing them a little beyond their previous state.
All the control parameters defining the primitive are now gathered in a single floating panel; for example, you can specify UVSphere's number of Segments and Rings from a single panel.
Some primitives now show new parameters:

A new option is to decide, when adding the Cylinder primitive, if you need to cap its ends (Cap Ends option). The same decision is possible with the Cone primitive (Cap End option). Note that an uncaped Cylinder is a tube; therefore, the old redundant Tube mesh primitive is no longer directly available.
With the same logic, you can also decide if you want to fill the Circle with faces (Fill option). The result is then a Disk primitive.


A new mesh primitive is also available: Torus. It is possible to set both the Major Radius and the Minor Radius of the torus, and to specify how many segments are used to define both radii (Major Segments and Minor Segments).