.NET 11 RC2: What Is New and Whether to Upgrade From 8 or 10
Originally published at WowHow .NET 11 RC2, published on 13 October 2026, is the final release candidate and ships with a go-live license, but the practical advice is split by where you start: .NET 8 teams must move before 10 November 2026 and should land on .NET 10, while .NET 10 teams have until November 2028 and can wait for .NET 11 GA. [1] .NET 11 is a Standard Term Support release, so it gets two years of patches, from 10 November 2026 to 9 November 2028. [2] This post covers what is new in RC2, the support table for .NET 8 to 11, the upgrade steps and the breaking-changes list, and how to decide between shipping on RC2 and waiting. TL;DR RC2 (11.0.0-rc.2, 13 Oct 2026) is production-usable under the go-live license, but Microsoft has not published a GA date on the RC2 post. .NET 11 is STS: supported from 10 Nov 2026 to 9 Nov 2028 per the release notes README. .NET 8 and .NET 9 both reach end of support on 10 Nov 2026. .NET 10 (LTS) runs to 14 Nov 2028. C# 15 adds union...