Yes, Win 8 is still Vaporware
since it hasn't been officially released to manufacture. But on the other hand, how many significant changes have you seen in any MS products after this type of public beta or trial releases.
If there is a SIGNIFICANT bug reported by MANY people, maybe that will be fixed. There may be a few more things they are working on, but basically, what you see is what you get. Any changes will be under the covers, not visible.
I did install the consumer trial over the weekend. Based on my initial exposure I saw nothing impressive enough to encourage me to switch to it. The only good thing I can say is that I was able to install Office 2010 with only one issue that was easily resolved, and it appeared to work well.