Hmmm if that's the way it works that's a very positive change, although it's very different from other countries (where you can only apply for permanent residency after a number of years of actual residency) so I wonder if we're seeing the proper picture here. Finding simplified requirements is pretty difficult.
Your first link does indicate that the backlog for EB-3 category applications is 6-9 years. So in that time you presumably must be working and wouldn't e.g. be able to start your own company (which is something I'd want to do by age 35), and you'd still be at the mercy of companies who know you're an emigrant so they can pay you less. It doesn't look like you can apply for residency in the EB-2 category as a programmer unless a masters or above is a requirement for the job (i.e. Google is hiring you).
Overall the situation for older migrants is still not very good and while the US would be my first choice it still seems better to emigrate elsewhere or to wait until I'm more established and I qualify under a category with a much shorter backlog (after which it's another 5 years for naturalisation, whereas in other countries you're looking at 5-7 years TOTAL).
One serious potential problem: apparently the old employer can revoke your I-140 (if you change companies) and you lose your priority date if that happens. [1] Also all of this assume your sponsor is going to file the I-140 on your behalf. What if they promise to do it and then don't? You're still at their mercy.
[1] http://www.immigration.com/faq/us-green-card/form-i-140#t101...
