I know there are swishy new features in 4.0 - one Rogers 3.7 user in IT who has moved to 4.0 claims much better stability (JVM errors are a regular visitor here).
Are there any regressions in 4.0 where a user would miss anything in 3.7 or find it very different? In our department we would like to move to 4.0 without delay but sometimes you miss something which the userbase would get very peed off by.
I have the 7520 from Nextel and running the redirector, after about 2 weeks of running great I could no longer send e-mail. It sucked because i was in Vegas and didn't bring my laptop because I thouight I could work with the BB. Spoke with Nextel and said the best thing todo is to drop back to 3.6 or talk with RIM. I dropped back to and have had no issues so far. I am going to follow up with RIM to see if the next rev. will correct the issue. I was getting some kind of de-encyrption error.