[Newbies] Website change, Squeek by Example Game?

[Abuzar]

Hi all,

I was going through a squeek-by-example tutorial.  Not the .pdf book.
It was a simple game tutorial on the Documentation page.  After the
website changeover, it has seemingly disappeared.  Is it now obsolete?
or no longer recommended?

I'm also noticing that Squeak 4.5 is rolling out.  Is this a big
change?  Should I hold off going through tutorials until they're
updated?

Abuzar