chore: add links to /roadmap/dencun/

Author: wackerow

public/content/community/research/index.md

@@ -134,6 +134,10 @@ One particular area of layer 2 that requires more research and development is sa
 
 Sharding Ethereum's blockchain has long been part of the development roadmap. However, new scaling solutions such as "Danksharding" are currently taking center stage.
 
+The precursor to full Danksharding known as Proto-Danksharding went live with the Cancun-Deneb ("Dencun") network upgrade.
+
+[More about the Dencun upgrade](/roadmap/dencun/)
+
 #### Background reading {#background-reading-4}
 
 - [Proto-Danksharding notes](https://notes.ethereum.org/@vbuterin/proto_danksharding_faq)

public/content/history/index.md

@@ -119,6 +119,7 @@ EIP-7514 brings a tightening to the issuance of ETH by capping the "churn" rate
 </ExpandableCard>
 
 - [Read the Deneb upgrade specifications](https://github.com/ethereum/consensus-specs/blob/dev/specs/deneb/)
+- [Cancun-Deneb ("Dencun") FAQ](/roadmap/dencun/)
 
 <Divider />
 

public/content/roadmap/danksharding/index.md

@@ -81,7 +81,7 @@ Data availability sampling is required for validators to quickly and efficiently
 
 ### Current progress {#current-progress}
 
-Full Danksharding is several years away. In the meantime, the KZG ceremony has concluded with over 140,000 contributions, and the [EIP](https://eips.ethereum.org/EIPS/eip-4844) for Proto-Danksharding has matured, with an agreed upon production-ready specification already being tested on testnets. This upgrade is set to go live on Ethereum Mainnet in March 2024 as part of the Deneb + Cancun upgrade. You can keep up to date using the [EIP 4844 readiness checklist](https://github.com/ethereum/pm/blob/master/Dencun/4844-readiness-checklist.md).
+Full Danksharding is several years away. In the meantime, the KZG ceremony has concluded with over 140,000 contributions, and the [EIP](https://eips.ethereum.org/EIPS/eip-4844) for Proto-Danksharding has matured. This proposal has been fully implemented in all testnets, and went live on Mainnet with the Cancun-Deneb ("Dencun") network upgrade in March 2024.
 
 ### Further reading {#further-reading}
 

public/content/roadmap/scaling/index.md

@@ -44,7 +44,9 @@ This second step is known as [“Danksharding”](/roadmap/danksharding/). **It
 
 ## Current progress {#current-progress}
 
-Proto-Danksharding is the first of these roadmap items to be implemented as part of the Deneb + Cancun network upgrade in March of 2024. 
+Proto-Danksharding is the first of these roadmap items to be implemented as part of the Cancun-Deneb ("Dencun") network upgrade in March of 2024. 
 **Full Danksharding is likely several years away**, as it relies upon several other roadmap items being completed first. Decentralizing rollup infrastructure is likely to be a gradual process - there are many different rollups that are building slightly different systems and will fully decentralize at different rates.
 
+[More on the Dencun network upgrade](/roadmap/dencun/)
+
 <QuizWidget quizKey="scaling" />