Zlatko wrote the eSQLBlast tool.

Danny's been writing Extension Methods and the ENtityBag class.

There is also a new tool for examining how code generation is done from an EDMX file. (As well as a blog by Sanjay about how code gen is done.)

All of these and future stuff are now collected under one umbrella, the Entity Framework Toolkits and Extensions page on the new MSDN Code Sharing site.

It also has an RSS feed, so you can see what gets added in the future.

Thanks Diego for pointing it out.