Its funny I googled for "Apply for PR" and I came accross the older ICA website in which they still haven't updated the change in requirement of tax statements
This is the old one:
http://app-stg.ica.gov.sg/page.aspx?pag ... &secid=150
This is the new one:
http://www.ica.gov.sg/page.aspx?pageid=151&secid=150
Looks like the 1st website is like a mirror or their QA/testing website, haha