# Release notes

```sim
basic.forever(() => { basic.showString("RELEASE NOTES"); });
```

## May 2017

We're happy to announce [m.pxt.io](https://m.pxt.io), an Blocks/JavaScript editor for the [BBC micro:bit](https://www.microbit.co.uk). 
The editor is [open source](/open-source) on GitHub. Send us your PR!

This release contains a Block/JavaScript editor, new simulator that supports multiple micro:bit instances, new documentation engine,
all the blocks from the Microsoft Block Editor in the BBC micro:bit web site.