🧪 Current BETA program

This article details the Beta release versions currently available, along with the corresponding feature sets enabled for testing in each version. Stay tuned! Follow the Beta Program section to make sure you don't miss the announcement of the Beta versions availability 

Please find below the list of features available for testing in each Beta version we release. 
Note that this list is subject to change and may not reflect the final feature set available at general availability.

In addition to exploring and validating these new functionalities, you are encouraged to test application deployment processes and verify that existing Rainbow features continue to operate as expected, consistent with the official release version.

Beta version v173.4 - Available since June 17 at 5:00 p.m. CEST -

Web application : 2.173.4
Desktop application Windows : 2.173.0
Desktop application macOS : 2.173.0
Android application : 1.173.0-beta.2
iOS application : 1.173.5 build 260604.1743

• Rainbow Hub: Numbering Format customization 
  Rainbow Hub now gives Cloud PBX administrators the ability to define up to 50 custom transformation rules on their numbering plan, finally closing a major gap with the hybrid OXE/OXO world. In practice, an admin can handle extension aliases, adapt regional dialing formats, customize emergency numbers, block specific destinations, or create a voicemail shortcut, all through regular expressions applied before any automatic Rainbow conversion. Each rule defines a match pattern, a replacement string with support for dynamic variables, a telephony category for barring purposes, and a description. Rules are active exclusively when Optimized Dialing mode is enabled, currently supported in France, UK, Australia, Belgium, Germany, and Spain, with US & Canada coming soon, and can be configured directly from the Web Admin interface. 
   
• Rainbow Hub: New DECT 8244 handset support 
  Rainbow Hub expands its DECT ecosystem with support for the new Alcatel-Lucent 8244 SIP-DECT Handset (part number 3BN67398AA, available to order as of June 15, 2026). This rugged handset — large color screen, noise reduction, rubber-backed grip, Bluetooth headset connectivity — extends the existing range by adding emergency call and alarm notification capabilities through dedicated CPE-based alarm servers. It operates with the 8328 SIP-DECT Single Base Station and 8368 SIP-DECT Multi-cell Base Station running firmware V781 or above, on all voice subscriptions. Available across 18 European countries (including France, Germany, Spain, and the UK). 
   
• Rainbow Hub: Extend the Maximum Value for Overflow timer 
  The call queue overflow timer maximum has been raised from 15 minutes (900s) to 60 minutes, allowing organizations with longer service workflows to keep callers in queue before triggering overflow, without relying on workarounds. 
   
• WebHID Support for Headset Call Control (Web and Desktop) 
  WebHID gives the Rainbow web app direct access to USB HID reports, covering the basics of headset call control — hook switch, mute sync, ring LED — with no driver or SDK installed on the client. The user must grant device permission. 
  WebHID protocol does not provide a facility for multiple applications to coexist. To avoid race conditions, the user must grant access to only one application or disable WebHID when using other clients simultaneously.
  For the Rainbow Web application, browser support is a hard limit: Chrome and Edge only. The enduser has the possibility to enable/disable the use of WebHID via the audio/video settings inside the Rainbow Client.  
   
• [Hybrid Telephony] Other Phone – Improved Destination Dialog 
  "Other Phone" is the telephony mode that lets users reroute calls to any external phone number (home, hotel, etc.) while keeping control within Rainbow. A new dialog UI is now available to search for the destination number in directories or favorites, improving efficiency and reducing manual entry errors. 
   
• Extension Manifest Improvements 
  Extension manifest files shared and deployed by an admin can now be updated without breaking the user's link and without requiring redeployment to end users. 
   
• [Analytics] Hub Group Reports - Add KPIs about call duration and waiting time
  Get more insights in the email reports you can configure for your groups and call queues  : 12 new key indicators are now available around call duration and waiting time. 
   
• Support for Machines Without GPU 
  Video processing features such as background blurring typically benefit from GPU acceleration. On machines without a dedicated GPU, this can result in degraded rendering quality. A new setting allows Rainbow users disabling hardware acceleration for users facing performance issues, maintaining acceptable rendering on low-spec machines. 
   
• [QUALITY] Support of Android 17 for mobile 
  Rainbow app is fully compatible with the new Android 17 version. Useful for those playing with Android 17 beta versions. GA of Android 17 is coming soon… 
   
• [QUALITY] Refactoring of the Polls on iOS app (compliance with iOS standards)
  We have improved the way polls are created and managed, for a better user experience.