What I meant is that the page itself doesn't tell you anything about how you would actually get it.
The first thing I did after clicking on the link was search the Play Store for "Google Now" - obviously it came up a blank.
What this means is that I'll probably forget all about it by the time I either:
a) get an Android 5 phone/tablet, or
b) update my Galaxy S2 or Galaxy Tab to Android 5
Google could have alleviated some of this by having an app ready for download and linking to it. I have to admit that I hoped that this was the way forward since they released Chrome Beta, as opposed to relying on manufacturers/carriers updating their phones. Alas, it wasn't to be.