Launched Gemini 3 Flash Preview, gemini-3-flash-preview, delivering fast frontier-class performance that rivals larger models at a fraction of the cost.
Product news · Gemini API release notes
Weekly briefing
Week 51 · 15 Dec – 21 Dec 2025 UTC · assess the changes, then plan the next dates.
All dated changes in this period
138 source records · 61 groupsUpdates and guidanceMicrosoft Graph9 source records
Teamwork and communications (v1.0): 9 API change passages
Graph announcement · 9 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
Updates and guidanceWindows
Coreinfo v4.0, NotMyFault v4.30, and Process Explorer v17.09
Product news · Sysinternals Blog
Message CenterDynamics 365
MC1198596: Dynamics 365 Contact Center – Evaluate closed conversations with Quality Evaluation Agent
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Dynamics 365 Apps
Message CenterExchange / Microsoft 365 Apps2 source records
Message Center · Stay informed · 2 entries
- MC1198702: Microsoft Outlook: Wait on Send for Data loss Prevention
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Exchange Online, Microsoft 365 apps
- MC882252: New Microsoft Outlook for Windows: Sharing Word, Excel, and PowerPoint local files through email
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Exchange Online, Microsoft 365 apps
Message CenterMicrosoft 365 Copilot / SharePoint
MC1186367: Announcing the new pay-as-you-go experience in Microsoft 365 Admin Center
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online, Microsoft 365 Copilot Chat
Message CenterMicrosoft 365 Copilot
MC1198705: Microsoft 365 Copilot: Nine new connectors now generally available
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 Copilot Chat
Message CenterSharePoint
MC1198704: Microsoft SharePoint Online: Email customization for site access review from Data Access Governance reports
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online
Message CenterTeams
MC1166877: Microsoft Teams: Emojis in section names
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Teams
Message CenterViva
ReleasesVisual Studio Code
Visual Studio Code · Stable: 1.107.1 (November 2025 Recovery 1)
New version · GitHub release record · package availability may differ
Assessment context
ReleasesWindows Terminal
Windows Terminal · Stable: 1.23.13503.0
New version · GitHub release record · package availability may differ
Assessment context
10 release-note bullets
- When Terminal encounters a GPU or driver issue, it will attempt to fall back to software rendering before giving up and asking you to intervene (#19636)
- DECRQCRA was erroneously disabled for everyone _even if you turned it on_; no longer! (#19606)
- Terminal can once again target the correct virtual desktop when creating a new window (#19458)
SecurityFortinet
Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
Fortinet · exploited, added to CISA KEV
CVE-2025-59718
Assessment context
CISA lists it as exploited
Message CenterExchange2 source records
Notice updated · 2 entries
- MC1197103: Exchange Online ActiveSync device support update
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Exchange Online
Assessment context
Microsoft marks it a major change
- MC1183297: New toolbar customization for multi-select in Outlook Mobile
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Exchange Online
Updates and guidanceAzure2 source records
Azure update · 2 entries
Updates and guidanceMicrosoft Graph21 source records
Graph announcement · 10 passages · 5 entries
- Calendars (v1.0): 10 API change passages
Graph announcement · 10 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
- Device and app management (v1.0): 4 API change passages
Graph announcement · 4 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
- Identity and access (beta): 2 API change passages
Graph announcement · 2 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
Show the other 2 entries
- Identity and access (v1.0): 2 API change passages
Graph announcement · 2 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
- Personal contacts (beta): 3 API change passages
Graph announcement · 3 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
Updates and guidanceOpenAI
Released gpt-image-1.5 and chatgpt-image-latest, our latest and most advanced models for image generation.
Product news · OpenAI API changelog
Message CenterDefender / Teams
MC1133508: Microsoft Teams Integration with Microsoft Defender for Office Tenant Allow/Block List for blocking domains
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Teams, Microsoft Defender XDR
Message CenterMicrosoft 365 Apps
MC1198067: Updates available for Microsoft 365 Apps for Current Channel
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 apps
Message CenterMicrosoft 365 Message Center Archive by Merill Fernando2 source records
Notice updated · 2 entries
- MC1198079: Migrate User Data Across Tenants: Mailboxes, OneDrives, and Teams Chats
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 suite
Message CenterPurview
MC1198078: Microsoft Purview | Data Loss Prevention - Mac device and device group based policy scoping support for Endpoint DLP
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Purview
Message CenterSharePoint
MC1198075: Site attestation policy is now generally available
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online
Message CenterTeams2 source records
Notice updated · 2 entries
- MC1162964: New in Teams – open channels in dedicated windows
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Teams
SecurityUbiquiti UniFi
Security Advisory Bulletin 057
Security news · Ubiquiti security advisory bulletins
Groups collect records about the same product or named security topic on one UTC date. Open a record for its source and history; grouping alone does not establish a shared cause or impact.