I've seen lots of tablet spec's come and go, doesn't matter if the UI is laggy and unresponsive. Sorry to burst anyone's bubble but the videos they are showing are edited/blue screen video's, not running on actual hardware. Apple did the same thing prior to launch, proof is yet to come.
"and it is open..." Yep, right up to the point they release it on any given US cell carrier that puts their restriction or bloatware on the device. Then it's just going to sit in line and wait for weeks, months or years for any updates as you get to hold your Xoom with 3.0 as 3.1, 3.2 etc.. roll out.
iPad has it's shortcomings, but at least my hardware runs smooth, and I can update to the latest OS version for a few years before it's obsolete. Android smartphones outside the world of Google's own Nexus One and now Nexus S get to wait in line until each carrier recodes their restrictive UI skins and decide if they "allow it".
Sounds "open" to me.
It is not a friggin phone it is a tablet, and a Wi Fi one does not need to be sold by a carrier, can be sold at Best Buy and others with the original OEM software.