Looks like Pinball News is the first outlet to cover the bonus deeproot reveal https://www.pinballnews.com/site/2020/11/23/latest-retro-atomic-zombie-adventureland-shown/
"Perhaps one unintended reveal was shown on the main display. This was a URL to a website to find out more about the game: pinapi.turnerlogic.com. This appears to have been a testing website used by Deeproot Pinball to access their API for in-game internet connectivity, along with drpb.turnerlogic.com which was a full website for the company. Although the content on this latter website no longer exists at that URL, Google did manage to archive it.
The website was last modified towards the end of September and so it may well be outdated by now due to design and manufacturing delays together with increased costs, but the archived site describes a price of $4,999 for the Arcade model, together with a list of upgrade options including a $50-a-month (one year minimum term) ‘rootAccess‘ subscription plan to buy insider access, branded merchandise, preferential shipping rates and additional downloadable digital content such as software upgrades, exclusive modes and assorted power-ups.
A lower entry price – which would heavily undercut Stern Pinball’s Pro model price point – together with upgrade options for additional in-game content would be a new pricing model in the pinball industry, even though it is the norm in computer, mobile and console gaming. Even there though, bug fixes and updates to the core game code are generally published free-of-charge in order to make sure everyone is running the latest version, which makes support easier for everyone.
The pricing and any subscription models remain speculation until Deeproot Pinball published confirmed details and pricing, but it’s clear the company has addressed several of the concerns raised about RAZA just before their aborted launch and have many more ideas planned for this game and their new platform."
I'll note that the drpub url was actually also on the screen