Quote from Lucy OpenDev announcement:

Of course, OpenDev is all about getting your feedback, so we’d be remiss not to tell you what we’ve learned from our Stadia OpenDev and how we plan to address it. 

• Many of the OpenDev players were excited by the potential of combining different cultures, both thematically and mechanically, and we have seen numerous speculation threads since then. 
• Events and Civics remain a popular way to gradually shape your civilization over the course of the game. 
• Most players found that they moved too quickly through the eras and the technology tree. We agree that the pace of the game is currently too fast in those respects and are working to balance this. 
• While the underlying systems of Diplomacy and Trade were popular with players who dug into them, we received a lot of feedback that these systems are difficult to follow and understand. We are adding additional interface elements to help players keep track of their diplomatic relations and trade deals, for example a history of interactions you can access on the Diplomacy screen. 
• Many players also found it difficult to judge how well they were doing compared to other civilizations, so we are looking into ways to display the Fame of other civilizations to the player. 
• We have received a lot of feedback on the balance of cultures and are working to address this. For example, many players felt the Celts and Huns were much stronger than the other cultures, so we are reining them in. 
• Some players found the stability system difficult to understand, while others thought that it was too easy to maintain high stability. We are doing a balancing pass on Stability to address these issues. 
• While the religion system as a whole was fairly popular, many players felt there were not enough tenets to choose from and it was too easy to reach the highest tier of tenets. To address this, we are adding new tenets and a new tier. 
• Many players were confused by the Historic Religions and why they are taken as a Tenet. We have changed this so that players can choose a Historic Religion when they adopt another tenet, rather than doing so instead of adopting a Tenet. 
• While most appreciated the presence of the Independent Peoples, many were disappointed that they were divided into only two groups. We are going to further differentiate the Independent Peoples through Ideologies. 
• A lot of players found that conquering Independent People was quick and easy, assimilating them was difficult and obscure. We’re working to make conquest more difficult and assimilation more rewarding, while improving the clarity of the User Interface. 
• As many found it strange and potentially tedious or exploitable that you could field an unlimited number of armies, we will likely return some limit on the number of armies you can field without penalties. 
• Many players also felt that they could take too much from other civilizations after only a handful of battles in a war. We are still working to balance the Morale gains and losses as well as costs to address this issue.

We hope you will enjoy this new OpenDev scenario and keep providing us with constructive feedback!

Although this doesn't specifically state anything about the ideas taken from Feedback suggestions being placed into the Lucy Opendev.

Will__W wrote:

where do i go to actually access the game? from what i have seen there is at least a beta out but i have looked across multiple platforms and have not seen where i could actually play it?

Hi !

The "demo/beta" will be out tomorrow : From December 15th at 16:00 CET (10:00 EST, 7:00 PST) to December 28th at 16:00 CET, anybody who has pre-purchased Humankind on Steam can try out the new (English language only) Lucy OpenDev.

To access it, just follow these instructions :

Have fun !