It has been a while. The new versions of both the 4' x 4' and 4' x 8' plans with the new base brackets are now up on the website, and feature some fancy exploded views to make things easier to visualize. An updated BOM for these is coming soon.
We do have the undermount brackets for plasma guys are in stock, they just aren't on the site yet. Just shoot a note if you'd like a quote for these.