What problem does this address?

The SelectControl currently only supports id, label, value and disabled properties for the rendered <option> HTML elements.

There is no way to specifiy the title attribute for the rendered <option> elements.

For improving UX experience it would be nice to have the <option> title attribute addressable.

In that case users could see a descriptive information about the hovered item.

What is your proposed solution?

Developers should supply an additional description attribute within the controls options property which gets mapped to the rendered <option> HTML elements title attribute.

Moreover, if an item was selected the selected item description (aka title) should be set as the rendered <select> HTML element title attribute so that hovering over the control would show up the native tooltip with the description of the currently selected item.