About 3 weeks before the upgrade took place, I received e-mails informing me about the upcoming update. It included the plan date and also mentioned I could postpone the update. As the date of the upgrade approached I also received mails with information of new features and what had to be done.
The upgrade itself took place on the date that was communicated to me and when it was done I got a mail informing me that the upgrade had been completed. When I logged on to the Office 365 admin center (https://portal.microsoftonline.com/) I immediately found this to be a big improvement. It also showed me some alerts containing links to information about changes and tasks that still needed to be performed like upgrading SharePoint sites.
I didn’t expect any big issues, but I was a bit worried if my SharePoint customizations would keep working correctly:
It is possible to leave the SharePoint site the way it is (at least with this upgrade), but you can also upgrade it and take advantage of the new options. If you are considering upgrading the SharePoint site, you can perform a health check and you can also request an upgrade evaluation copy of the site collection before you actually upgrade.
Probably because of my customizations, the Site Collection Health Check found some problems related to Customized Files that could result in unexpected visuals or behavior.
For now, everything seems to be working fine though on my upgrade evaluation copy of the site collection, so I’ll probably upgrade my site collection soon. If you want to, you can take a look at both the pre-upgrade SharePoint site and the post-upgrade SharePoint site. The evaluation post-upgrade version will only be available until the 23rd of June.
What I did notice, is that the interface of the services have improved and have also been changed to better suit for touch devices. By example the white space between navigation items seems to have increased and everything is a bit bigger.
After the upgrade, I also had to restart some Office 2013 apps once.
Of course the upgrade to Wave 15 provides many more advantages, but in this post I only wanted to share my service upgrade experience without really changing anything. All in all, I think the upgrade experience went very well.