# Hugging Face Transformers v1.0.0 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v1.0.0
- **Released:** Jul 16, 2019
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v1.0.0/

## Executive Summary (TL;DR)
Hugging Face Transformers v1.0.0. Source highlight: Name change: welcome PyTorch-Transformers 👾

## Breaking Changes & Deprecations
- Breaking-changes The [migration section](https://github.com/huggingface/pytorch-transformers#migrating-from-pytorch-pretrained-bert-to-pytorch-transformers)  of the readme lists the breaking changes when switching from `pytorch-pretrained-bert` to `pytorch-transformers`.
- The [migration section](https://github.com/huggingface/pytorch-transformers#migrating-from-pytorch-pretrained-bert-to-pytorch-transformers)  of the readme lists the breaking changes when switching from `pytorch-pretrained-bert` to `pytorch-transformers`.
- The main breaking change is that all models now returns a `tuple` of results.

## New Features
- Two models (base and large) for the newly added XLNet model
- Eight models for the newly added XLM model

## Upgrade Command
```bash
python -m pip install 'transformers==1.0.0'
```