# Base image release notes
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This page lists the changes in each version of the AWS Lambda MicroVMs managed base image. For information about how base image versioning and deprecation works, see [MicroVM base images](microvms-images.md#microvms-images-base-images).

## Version 3
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+ **x86\_64 architecture support** – You can now build MicroVM images for the `x86_64` architecture, in addition to `ARM64`. For more information, see [CPU architecture](microvms-images.md#microvms-images-cpu-architecture).

## Version 2
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**Released:** November 5, 2026
+ **Higher ingress bandwidth limits** – Raised ingress bandwidth limit from 1 MB/s to 2 MB/s per vCPU, with a burst allowance of 10 MB/s per vCPU for up to 5 seconds.
+ **Higher connection limits** – Per-MicroVM concurrent connection and request limits are raised from a flat 8 per vCPU to a floor of 150, plus 50 per additional vCPU, up to a maximum of 600. This change better supports high-concurrency workloads.
+ **Live build log streaming** – Output logs during MicroVM image build now stream to CloudWatch Logs in real time, instead of appearing after the build completes. If you build large or multi-stage images, you no longer have to wait for the build to complete before viewing logs.
+ **Updated kernel** – Images now run on kernel 6.1.166-24.303.amzn2023.
+ **Snapshot and memory optimizations** – Reduced MicroVM image snapshot size by up to 65 MB through optimizing image build artifacts and the memory reclamation process.
+ **Error handling** – More comprehensive and verbose error handling and exception reporting.