TimescaleDB v2.18 and SQL Assistant Improvements in Data Mode and Pop…

…SQL (#3810)

about/changelog.md

@@ -6,9 +6,46 @@ keywords: [changelog, upgrades, updates, releases]
 
 # Changelog
 
-All the latest features and updates to Timescale products. 
+All the latest features and updates to Timescale products.
+
+## 🤖 TimescaleDB v2.18 and SQL Assistant Improvements in Data Mode and PopSQL
+
+<Label type="date">February 6, 2025</Label>
+
+### TimescaleDB v2.18 - dense indexes in the columnstore and query vectorization improvements
+Starting this week, all new services created on Timescale Cloud use [TimescaleDB v2.18](https://github.com/timescale/timescaledb/releases/tag/2.18.0). Existing services will be upgraded gradually during their maintenance window.
+
+Highlighted features in TimescaleDB v2.18.0 include:
+
+* The ability to add dense indexes (btree and hash) to the columnstore through the new hypercore table access method.
+* Significant performance improvements through vectorization (SIMD) for aggregations using a group by with one column and/or using a filter clause when querying the columnstore.
+* Hypertables support triggers for transition tables, which is one of the most upvoted community feature requests.
+* Updated methods to manage Timescale's hybrid row-columnar store (hypercore). These methods highlight columnstore usage. The columnstore includes an optimized columnar format as well as compression.
+
+### SQL Assistant Improvements
+
+We made a few improvements to SQL Assistant:
+
+**Dedicated SQL Assistant threads** 🧵
+
+Each query, notebook, and dashboard now gets its own conversation thread, keeping your chats organized.
+
+![Dedicated threads](https://assets.timescale.com/docs/images/sql-assistant-threads.gif)
+
+**Delete messages** ❌
+
+Made a typo? Asked the wrong question? You can now delete individual messages from your thread to keep the conversation clean and relevant.
+
+![Delete messages in SQL Assistant threads](https://assets.timescale.com/docs/images/sql-assistant-delete-messages.png)
+
+**Support for OpenAI `o3-mini` ⚡**
+
+We’ve added support for OpenAI’s latest `o3-mini` model, bringing faster response times and improved reasoning for SQL queries.
+
+![Screenshot of o3-mini](https://assets.timescale.com/docs/images/sql-assistant-o3-mini.png)
 
 ## 🌐 IP Allowlists in Data Mode and PopSQL
+
 <Label type="date">January 31, 2025</Label>
 
 For enhanced network security, you can now also create IP allowlists in the $CONSOLE data mode and PopSQL. Similarly to the [ops mode IP allowlists][ops-mode-allow-list], this feature grants access to your data only to certain IP addresses. For example, you might require your employees to use a VPN and add your VPN static egress IP to the allowlist.
@@ -710,4 +747,4 @@ To learn more, see the [postgresql-unit documentation](https://github.com/df7cb/
 [ops-mode-allow-list]: /about/:currentVersion:/changelog/#-ip-allow-lists
 [popsql-web]: https://app.popsql.com/login
 [popsql-desktop]: https://popsql.com/download
-[console]: https://console.cloud.timescale.com/dashboard/services
+[console]: https://console.cloud.timescale.com/dashboard/services