Here's his blog post.
As mentioned before, Sun will latch onto everything that might give it some exposure (see post below about Sun's strategy wheel). They have no direction and are looking for anything that will stick. So they can dedicate a few guys to supporting Rails and make it look like Sun is a big Rails champion.
A word of advice to those involved in Rails.... do not hitch your cart to Sun. Use them to get good prices on (or better yet, free) hardware. Use them to expose yourselves. But at the end of the day, keep your movement to yourselves and don't let Sun start driving it for you.
BTW, I am using Netbeans 6.0 beta 1 for Rails dev and it's not bad. It hangs a lot and doesn't come back, but it's not often that you get an IDE that has decent code completion for a dynamic language (i.e. using type inference and introspection to do code completion).