Does site update affects pagerank ?

[shanken]

Originally Posted by george.web13

Hi, I just made a new version for my site.
(it's not yet uploaded)

I want to ask these :
1) Will this, affect google's page rank for my site ? Right now, I have pr:4, and the h1,h2,h3 tags will be different.
Also, the pages titles, the metadescriptions and the main content (slightly) will be change. Will this affect my site's current position at search results?
2) Will i have to re-submit my new site to webmaster tools ?

It probably wont change the PR staus of your website and even if it does we wont know what it is because Google no longer publishes info on PR of sites.

However if you change headings and titles then your SERP rank could change. It all depends on if you optimize for different keywords or the same ones.