It's official: I am developing my own version system to keep track of iGTD updates, because this 1.x.x thing is just not right. The way I see it, this new iGTD v1.4.5 should really be called v3.5, what with yet another batch of major new features being introduced. Included in this update is F-key integration with PathFinder, Yojimbo and MacJournal (so you can send items from these apps to iGTD for task tracking), a Quick Tags feature that allows you to bind tags to shortcuts like Alt + 1 - 9 and a killer new feature that integrates with an Apple Mail rule. Once set up, this rule allows you to email yourself with a subject like "todo: @work spike the water cooler" and Mail will send it on over to iGTD automatically. For anyone who works in an office and away from their Mac at home, this is a killer way to make actual use out of all those todo emails you send yourself all day.
Of course, I don't even need to tell you that there are more features in this update. By now it's become par for the course that an iGTD update brings tons of other enhancements, new tricks and bug fixes, so head on over to Bartlomiej Bargiel's announcement blog post to get the full details. To get the new version, simply start up iGTD or head up to the application menu and chose Check for Updates, or simply visit the iGTD downloads page and click the Current Release link to make sure you get the most up-to-date version.