is ES4 getting too bloated?

[Brendan Eich]

I know of two industry-scale implementations under way, in addition  
to Mozilla's Tamarin project, and Michael O'Brien (mbedthis.com), all  
implementing ES4 in the next six to nine months. There's no reason,  
zero, apart from will to do something else, why Microsoft (which has  
enormous resources, in expert people and money) couldn't do likewise.  
Perhaps they yet will -- we don't really know what's coming in IE8 yet.

Give the overview at http://www.ecmascript.org/es4/spec/overview.pdf  
a read and let us know what you think.

/be