# Tableau 2026.1 Desktop Features including Rounded Corners

> This is content from just-tim, the data-and-analytics channel by Tim Ngwena (formerly 'Tableau Tim'). Tim has 12+ years of hands-on BI experience and covers Tableau most of all, plus Power BI, Looker, Hex, SQL and data modelling, the analytics industry, and the craft of doing the job — always tool-agnostic and honest about the trade-offs.

- **Author:** Tim Ngwena (just-tim, https://just-tim.com/about)
- **Published:** 2026-02-01
- **Format:** Video · 16 min watch · transcript available
- **Topics:** Data visualisation, Industry trends, Tool strategy
- **Tools:** Tableau (ai, cloud, data modelling, filters, formatting, maps, prep, public)
- **Canonical:** https://just-tim.com/posts/tableau-20261-desktop-features-including-rounded-corners
- **Watch:** https://www.youtube.com/watch?v=SQAR0pXUk7M

I break down all the Tableau Desktop features coming in the 2026.1 release, an incremental update building on 25.3. I cover rounded corners, AI-assisted colour palettes, view data model improvements, mapping geometry support, several new and deprecated connectors, and OAuth changes.

## Key takeaways

- Rounded corners are finally supported natively in 26.1 across Desktop, Cloud and Tableau Public, removing the need for Figma images or formatting hacks.
- AI-assisted colour palettes let you type a prompt to generate a palette, but require a Tableau Agent enabled site with Tableau AI and consumption credits.
- Mixed geometry support lets Tableau visualise points, lines and polygons from a single column, removing the need for external data prep or SQL.
- The new REST API connector replaces the deprecated web data connector, letting you connect to API endpoints by supplying URL, response format, JSON path and authentication without writing code.
- The Marketo and Oracle Eloqua connectors are being removed in 26.1 — JDBC-based replacements are available on the Tableau Exchange and work back to version 21.2.

## Chapters

- 0:00 Release overview and cadence
- 1:35 Rounded corners
- 3:07 AI-assisted colour palettes
- 4:23 View data model improvements
- 6:02 Smart filter on table names
- 6:35 Mixed geometry map support
- 8:29 REST API connector
- 9:57 Google Looker connector
- 11:19 Amazon S3 connector
- 13:07 OAuth updates for OneDrive, SharePoint and Cloudera Impala
- 14:07 Removal of Marketo and Oracle Eloqua connectors

Watch the full video, read the transcript and use chapter deep-links on the page: https://just-tim.com/posts/tableau-20261-desktop-features-including-rounded-corners

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just-tim — Data and analytics, with a point of view. · https://www.youtube.com/channel/UC7HYxRWmaNlJux-X7rNLZyw · https://twitter.com/TableauTim · https://www.linkedin.com/in/timngwena