@Mathew, Rinesh P
Please choose one Office app to go to File > Account > Product Information, check the update channel.
For Semi-Annual Enterprise Channel (Preview) and Semi-Annual Enterprise Channel, currenlt the the latest version both are Version 2008.
The feature updates and resolved issues for those 2 update channels, please check out the folllowing articles.
Release notes for Semi-Annual Enterprise Channel
Release notes for Semi-Annual Enterprise Channel (Preview)
For Outlook, one of the new features of Version 2008 is a new Search box which moved to title bar.
But for other Office apps, such as Excel, this similar new feature is from Version 2002. To get more detailed information, please click "Learn more" in the linked article.
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