Learning curve is not that big
I'm not sure what people are complaining about the learning curve. Having used Consumer Preview and not Release Preview on my main machine, I have to say that it feels just like Windows 7 with improvements. Honestly I never have to go into Start menu and I imagine most employees in the enterprise won't have to either once all their applications are pinned to the taskbar. Even when you have to go into the start menu, it's really not that much of a learning curve; just a couple different steps. Honestly, I hardly use the Start menu and almost all my applications are on the taskbar or desktop just as they were in Windows 7. I actually forget I'm even using windows 8 sometimes because the desktop interface is just like Windows 7. The only annoyance is the way they've changed Start search which is the only thing I really use Start menu for. If MSFT changed that, I'd be totally on board with the metro update. Now of course, whether it is worth the upgrade to Windows 8 is another story. A Windows 7 user would have little difficulty transitioning to Windows 8. But, there is not much in Windows 8 that makes it worth the cost to upgrade. It's kinda similar to Office. There were plenty of reasons to upgrade to Office 2007 from 2003. But, there's not enough new features in 2010 to make it worth the upgrade from 2007 unless you use the cloud or Office 360 features. Similar thing applies here. It was worth the upgrade to Windows 7 from XP, but I don't think it's financially worth it to upgrade to Windows 8 from 7.