C# 11 is the next version of C# coming in .NET 7, and it is introducing a warning wave that issues a warning when a type is declared with all lower-case letters. This is being done so that in the future the language can begin moving away from conditional keywords and instead use full on keywords instead. The warning is alerting customers to types that may become keywords in future versions. 

** Highlights
* IO bound methods have gained an async counterpart. Not intended for parallelism, make sure to await each
call before further interacting with a session and its queries.
* Strongly typed DML operation (insert/update/delete) are now available as Linq extensions on queryables.
* Entities collections can be queried with .AsQueryable() Linq extension without being fully loaded.
* Reference documentation has been curated and completed, notably with a Linq section.
 

The first preview of Entity Framework Core (EF Core) 8 is available on NuGet today!

Basic information

EF Core 8, or just EF8, is the successor to EF Core 7, and is scheduled for release in November 2023, at the same time as .NET 8.

EF8 currently targets .NET 6. This will likely be updated to .NET 8 as we near release.

EF8 will align with .NET 8 as a long-term support (LTS) release. See the .NET support policy for more information. 

We're pleased to announce the availability of a new major version, Rx v6.0.

• 🚀 First update in 2.5 years, with support for .NET 7.0, .NET 6.0, .NET Standard 2.0, .NET Framework 4.7.2
• ✂️ Support for trimming
• 🪲 Now using .snupkg for symbols
• 💥 New options for dealing with unhandled exceptions
• 🛠️ Modernised tooling and DevOps processes to reflect .NET as of H1 2023
• 💪 288 hours of effort went into this release.
• 🤞 Much more to come in v7.0 in H2 2023 

NuGetizer as an alternative to .NET SDK Pack 

Several improvements to the update pipeline are now part of Preview 3, including:

• Improve SQL Server insertion logic (also make RETURNING the default INSERT strategy for retrieving db-generated values for other providers).
• Use RETURNING/OUTPUT clause for UPDATE/DELETE
• Refactor ReaderModificationCommandBatch
• Reimplement MaxBatchSize as a pre-check  

With .Net Framework 4.5 and higher I would always use ExceptionDispatchInfo to rethrow as it gives the most complete picture of the events that happened. 

The fourth preview of .NET 7 includes enhancements to observability in the .NET implementation of OpenTelemetry, the addition of properties to track microseconds and nanoseconds in date and time structures, new metrics for caching extensions, performance-boosting “on stack replacement,” APIs to work with .tar archives, and additional features as part of an ongoing effort to improve the performance of and add features to regular expressions in .NET 7.  

Biggest advantage to using ASP.Net MVC vs web forms

"Going forward, we do not plan to evolve Visual Basic as a language," the .NET team said. "This supports language stability and maintains compatibility between the .NET Core and .NET Framework versions of Visual Basic. Future features of .NET Core that require language changes may not be supported in Visual Basic. Due to differences in the platform, there will be some differences between Visual Basic on .NET Framework and .NET Core."