diff --git a/README.md b/README.md
index 901a146..c23f6f8 100644
--- a/README.md
+++ b/README.md
@@ -62,11 +62,14 @@ and data distribution capabilities.
 performance or structure.
 
 ## Use Cases:
-- Distributed Databases: Efficiently maintain and synchronize indexes across distributed systems.
-- Version Control Systems: Enable verifiable diff, sync, and merge operations for large datasets.
-- Blockchain and P2P Networks: Manage and synchronize data with verifiable integrity.
-- Real-time Collaborative Editing: Support multiple users making simultaneous changes with efficient merging.
-- Cloud Storage Services: Manage file versions and ensure efficient data retrieval and synchronization.
+- AI Agent Memory & Long-Term Context: Serve as a structured, versioned memory store for AI agents, enabling efficient diffing, rollback, and verifiable state transitions.
+- Versioned Vector Indexes for GenAI: Manage evolving embedding databases in RAG systems or vector search pipelines with Git-like tracking and time-travel queries.
+- Prompt and Model Versioning: Track changes to prompts, fine-tuned adapters, or LoRA modules, supporting collaborative AI workflows with history and merge capabilities.
+- Real-time Collaborative Editing: Support multiple users or agents making simultaneous changes with efficient merging and conflict resolution.
+- Version Control Databases: Enable verifiable diff, sync, and merge operations for large structured datasets, similar to Git but for tabular or document-based data.
+- Distributed Databases: Maintain and synchronize ordered indexes efficiently across distributed nodes with structural consistency.
+- Blockchain and P2P Networks: Provide verifiable, tamper-proof data structures for syncing state and ensuring data integrity.
+- Cloud Storage Services: Manage file versions and enable efficient synchronization, deduplication, and data retrieval across clients.
 
 ## Usage
 
@@ -186,7 +189,21 @@ The following features are for Prolly tree library for Version 0.1.0:
 The following features are for Prolly tree library for Version 0.2.0:
 - [X] Arrow block encoding and decoding
 - [X] Parquet/Avro block encoding and decoding
-- [ ] Advanced probabilistic tree balancing
+
+The following features are for Prolly tree library for Version 0.2.1:
+- [ ] tree diffing and merging
+- [ ] show history of changes of the tree (git logs style) using `gitoxide` crate
+- [ ] support build database index using Prolly Tree
+
+The following features are for Prolly tree library for Version 0.2.2:
+- [ ] version-controlled databases
+  - [ ] prolly tree backend for git databases using `gitoxide` crate
+  - [ ] support for IPFS (InterPlanetary File System) for distributed storage
+  - [ ] advanced probabilistic splitting algorithms
+- [ ] decentralized databases
+  - [ ] add support for cryptographic hash functions like SHA-256, BLAKE3, etc.
+  - [ ] support ZK-friendly hashes such as Poseidon, MiMC, etc.
+  - [ ] supporting a rollup-style L2 for a decentralized database
 
 ## Contributing