Source http://www.engadget.com/2012/03/19/apple-touts-three-million-new-ipads-sold-since-launch/
From the press release section, bolding mine:
The new iPad is already available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore, Switzerland, UK and the US Virgin Islands and will be available in 24 more countries starting at 8:00 a.m. local time on Friday, March 23 through the Apple Online Store (www.apple.com), Apple's retail stores and select Apple Authorized Resellers, including Austria, Belgium, Bulgaria, Czech Republic, Denmark, Finland, Greece, Hungary, Iceland, Ireland, Italy, Liechtenstein, Luxembourg, Macau, Mexico, The Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden.
Now who knows what retail stores will be carrying them? :)
DSE and yoobee had the iPad 2 on release last year, so hopefully they will again this year.