Here are the major changes expected with the new updated version.
Yes, its 2020 and with so many more advanced substitutes like React, Vue, etc, Jquery is removed.
Bootstrap 5 will enable responsive font sizes by default. Now, it will be easier to resize the typography components according to the user’s viewport through Responsive Font Sizes or RFS engine.
In bootstrap-3, we had Glyphicons, then they were removed with bootstrap-4, so we had to rely on third parties. Now, it has an inbuilt SVG library called brilliantly by Mark Otto for making it a bit easier.
Bootstrap-4 had bulky code for cards creation to set equal width and height cards that aren’t attached to one another, Now, we have more of a responsive control with its new grid system.
Bootstrap 5 is switching to Hugo, written in Go language for faster and flexible static site generator, though both have identical features, Go is making it lightning fast. ;)
Bootstrap 5 will have the gutter width be measured using rem instead of px. As Px does not change based on any other element thus not good for modern responsive web design. So rem is the new standard, 1 rem is equal to the font size of the HTML element.
Out of the 1500 something classes from Bootstrap-4, few are removed like form-inline, Card-deck, form-row, and few are added eg, row-cols-auto, g-*, gx-* (classes control the horizontal/row gutter width), gy-*.
C'mon, we are in 2020.