E5的沙盒订阅是什么意思？

Welcome to your new Microsoft 365 E5 instant sandbox

Your new Microsoft 365 instant sandbox comes pre-provisioned with Microsoft Teams, SharePoint, Outlook, and Office. It also includes licenses for 24 test users plus one admin, and the latest Microsoft 365 apps for your PC and Mac, including Power Apps, Power BI, Enterprise Mobility + Security, Office 365 Advanced Threat Protection, and Azure Active Directory.

In addition, you get pre-installed sample data, including the new Teams sample data pack, which simulate a small corporate environment to help you build solutions across the Microsoft 365 platform. This includes:

Microsoft Graph user, mail, and calendar data – 16 sample users with user data and content to help you model your solutions. This includes user mailboxes, calendar events, and integration into a Teams developer environment with simulated chats and team memberships.
Teams sample data pack with the following customized developer environment:
App sideloading pre-configured.
Five sample teams, channels, tabs, and chat sessions built around the 16 sample users.
App Studio / Teams Developer Portal pre-installed and pinned to help you streamline the creation of your Teams app manifest and app package, plus the card editor and a React control library.
SharePoint Framework sample data – Choose from six site templates that you can install and evaluate as custom solutions for your organization (with one pre-installed).
Next steps

Go to your Microsoft 365 Developer Program dashboard to manage your sandbox subscription and get personalized recommendations based on your preferences.

Explore documentation and training for:

Microsoft Teams
Microsoft Graph
Office Add-ins for Excel, Word, Outlook, and moe
SharePoint Framework
Power Apps

看样子是又有25个许可证，是跟原来的订阅一起续订吗？