anand84 - 6:57 am on Feb 7, 2012 (gmt 0)
Thanks a lot Tangor and Robert Charlton. I guess we will be going with the CSS-level formatting of the h1 tag. The new design has all the headers in lower case; I hope it doesn't matter as long as we emphasize on the importance of the keywords using the h1 tag.
Regarding the other changes you have mentioned, we are largely retaining all the textual content from the earlier page (although some sections go up or down in the template depending on internal feedback).
We are retaining most other on-page SEO factors (and the off-page backlinks). So I hope the impact is minimal.. Thanks again for your help.