---
title: June 2021 VCL release ("Pizza")
summary: null
url: https://www.fastly.com/documentation/reference/changes/2021/06/vcl-changes
---

Today the minimum version of VCL available across our network increased, unlocking the following changes:

## New region

- New `AF-West` region introduced, and documented in `server.region`.

## New variables

- `segmented_caching.block_size`

## New functions

- `bin.base64_to_hex`

## Updated function and variable descriptions

We expanded the descriptions of a number of functions and variables, adding detail, code examples, and, in some cases, better explanations of error conditions or edge cases. There were updates to:

- `querystring.clean`
- `randomint_seeded`
- `randomint`
- `resp.tarpit`
- `std.strlen`
- `bereq.first_byte_timeout`
- `bereq.http.{NAME}`
- `client.bot.name`
- `client.browser.name`
- `client.browser.version`
- `client.class.bot`
- `client.class.browser`
- `client.class.masquerading`
- `client.display.height`
- `client.display.ppi`
- `client.display.width`
- `client.identified`
- `client.platform.hwtype`
- `req.backend.is_origin`
- `req.backend.is_shield`

## Withdrawn documentation

The following VCL tokens are not (or are no longer) intended for customer use, and the reference pages for them have been removed to avoid confusion:

- `client.sess_timeout`
- `req.backend.is_cluster`