Debian 7 Wheezy release expectable between March and April

Taking stats from Richard Hartmann's blog (thank you Richard for providing historical and detailed stats!).

First method: approximating RC bugs count descent with a straight line, intersection with x-axis (=wheezy's release) is foreseeable after the end of April 2013 (so far :( !).

Second method: RC bugs in testing are now 224, as eight-nine weeks before squeeze's release. 8-9 weeks from now gets to March's last-April's first week.

Which forecast will be most accurate? Will Debian 7 be released on April Fools' day?! ;)