Apple has finally announced that iPad2 will be sold in Singapore on 29th April 2011 Friday.
http://www.apple.com/pr/library/2011/04/27ipad.html
Apple® today announced that iPad® 2, the second-generation of its breakthrough post-PC device, will arrive in Japan on Thursday, April 28 and Hong Kong, Korea, Singapore and eight additional countries on Friday, April 29. iPad 2 will be available at Apple retail stores at 9 a.m. local time, select Apple Authorized Resellers, and online through the Apple Store® (www.apple.com) beginning at 1 a.m. Additionally, iPad 2 with Wi-Fi will be available in China beginning Friday, May 6.