I was just reading about it on AnandTech: http://www.anandtech.com/show/6781/samsungs-galaxy-note-80-introduction-hands-on
This is a first real iPad mini competitor but based on the SoC and design this looks like it was well into finalized development long before the iPad mini was announced and was probably fast tracked immediately after. I would imagine the next one will have thinner edges on the two sides and if Android doesn't include the ability to not register input from a hold then Samsung will add it to the OS
The PPI is 189 v. 163 for the iPad mini. Not a huge enough difference to sway anyone on the fence. The same goes for the iPac mini's 7.85 display having a display area than the Galaxy Note 8.0 despite the Galaxy Note having the larger display on the diagonal.
The 1280x800 would likely be more attractive but I can only see that being used by those in The Android camp to say why it's better than the iPad mini. I doubt that will be a problem even if Apple can't make a Retina iPad mini feasible this year because the iPhone 3GS was falling behind the display resolution and PPI from all other high-end phones at the time and yet still outsold every iPhone that came before it and only stopped being sold not 6 months ago.
Finally, I assume the price will be inline with but just under the iPad mini price but we don't have a launch date or price point at this time, only a loose commitment to next quarter. If it is more expensive than the iPad mini I wonder if we can conclude that the iPad mini is well priced or if Samsung isn't trying to compete with Apple just using Apple's methods to compete with all Android vendors.