Are there any known issues with ZCM 11 that should make me wait with upgrading till the first round of patches are out?

Currently we're in a pre-rollout phase and debating wether or not to stay on 10.3.1 or go to 11 right away. (We're already far behind schedule, but if it can fix some of the issues we're currently having with 10.3.1, I'll suggest it)

And, I could see in the upgrade notes that Novell writes you must do it in a short timespan. Could anyone elaborate on this? 1 day? 1 week? 1 month? In elementary schools, a short timespan is 1 month :-)

Rune "TheFlyingCorpse" Darrud