Apple is - of course - still the best source for 100% OFFICIAL updates on iPad 2's availability in the Philippines. (But really, TechPinas is also good.)
If you want to be among the first to get the official notification on iPad 2's release date and pricing details in the country, you can sign up using your email address via this link.
Or if you want, you can just visit TP's Apple iPad 2 Philippines page regularly. Oh, and don't forget to read the comments section.