We have a large mountain to climb with this conversion but we've left base camp... We've begun the extensive process of converting to the Obsidian block framework. Starting with small-scale tests, we've refined our techniques with each release to make the transition seamless. This involves either removing ('chopping') or replacing ('swapping') old block instances, with the ultimate goal of fully adopting Obsidian.
The list below shows which are the blocks we've converted from the old technology (webforms) to the new Obsidian framework. Unless noted with a "swap" symbol (), the block has been chopped.