docs(readme): update convergence table, latest news, and outdated links

[sbhavani]

Description

Updates README add missing format support documentation, update news section, and fix broken/outdated links.

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refactoring

Changes

• Add MXFP8 and NVFP4 format support to highlights and description
• Update FP8 convergence table with MXFP8 results from arxiv paper
• Remove outdated JAX Toolbox links and "available on request" entries
• Update Docker container versions to 26.01
• Fix DeepSpeed and Lightning integration links
• Add Nemotron 3 paper to Latest News
• Add quickstart notebook link after PyTorch example

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[greptile-apps]

Greptile Overview

Greptile Summary

This PR updates README.rst to reflect newer format support (MXFP8/NVFP4 on Blackwell), refreshes the FP8 convergence table with newer sources, and cleans up outdated/broken links (notably DeepSpeed/Lightning and removal of “available on request”/“coming soon” items). It also replaces the previously referenced non-existent quickstart notebook with an existing fp8_primer.ipynb tutorial link, improving navigability for users following the examples.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk.
• Changes are limited to documentation in README.rst and primarily fix/refresh links and tables; the prior broken notebook reference appears addressed by pointing to an existing notebook. No code paths or build artifacts are affected.
• No files require special attention

Important Files Changed

Filename	Overview
README.rst	Updates README news, adds MXFP8/NVFP4 support notes, refreshes FP8 convergence table entries, fixes integration links, and replaces a non-existent Quickstart notebook link with FP8 Primer.

Sequence Diagram

sequenceDiagram
  participant Author as PR Author
  participant Readme as README.rst
  participant Reader as User
  participant Ext as External Links

  Author->>Readme: "Update News/Highlights/Examples"
  Author->>Readme: "Refresh FP8 convergence table"
  Author->>Readme: "Update integration links"

  Reader->>Readme: "Read docs and follow links"
  Readme->>Ext: "Open FP8 Primer and integration URLs"
  Ext-->>Reader: "Render external pages"

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[greptile-apps]

_{1 file reviewed, 1 comment}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

The referenced quickstart.ipynb file does not exist in docs/examples/. The actual notebooks in that directory are fp8_primer.ipynb, advanced_optimizations.ipynb, and te_jax_integration.ipynb. Consider using one of these existing notebooks or creating the quickstart notebook before merging.

[greptile-apps]

_{1 file reviewed, 1 comment}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

extra whitespace in "Megatron Core" framework names - inconsistent with other rows

Suggested change

	| LLM-8B | Megatron Core | https://arxiv.org/abs/2506.08027 |
	+------------+------------------+---------------------------------------------------------------------------------------------------------+
	| MPT-13B | Mosaic Composer | https://www.databricks.com/blog/turbocharged-training-optimizing-databricks-mosaic-ai-stack-fp8 |
	+------------+------------------+---------------------------------------------------------------------------------------------------------+
	| GPT-22B | NeMo Framework | Available on request |
	| MoE-16B | Megatron Core | https://arxiv.org/abs/2506.08027 |
	| LLM-8B | Megatron Core | https://arxiv.org/abs/2506.08027 |
	+------------+------------------+---------------------------------------------------------------------------------------------------------+
	| MPT-13B | Mosaic Composer | https://www.databricks.com/blog/turbocharged-training-optimizing-databricks-mosaic-ai-stack-fp8 |
	+------------+------------------+---------------------------------------------------------------------------------------------------------+
	| MoE-16B | Megatron Core | https://arxiv.org/abs/2506.08027 |

_{Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time!}

[greptile-apps]

_{1 file reviewed, 2 comments}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

extra space before "Megatron Core" - should have 2 spaces like other rows, not 3

Suggested change

	| LLM-8B | Megatron Core | https://arxiv.org/abs/2506.08027 |
	| LLM-8B | Megatron Core | https://arxiv.org/abs/2506.08027 |

[greptile-apps]

extra space before "Megatron Core" - should have 2 spaces like other rows, not 3

Suggested change

	| MoE-16B | Megatron Core | https://arxiv.org/abs/2506.08027 |
	| MoE-16B | Megatron Core | https://arxiv.org/abs/2506.08027 |

[greptile-apps]

_{1 file reviewed, no comments}

_{Edit Code Review Agent Settings | Greptile}