My logic is that the current forum is already blistering with stickies that often don't serve a purpose anymore and it makes the forum index hard to read.
Those announcements and news listed here are not new anymore though. If you follow that logic you'd have to include all the news etc. even before release, just for those who really want to crawl through the historic events...
Aside from that this topic seems to be written in a semi-provocative form, with the date of the days since being written bold and so big. Instead of editing these dates daily someone with an honest intent would surely rather include the past announcements as well instead...
And if those old announcements are so important why not just request an announcement forum and dump all the developer threads etc in there? The mods could surely do that if it were necessary.
That said I guess if the provocative undertone of the opening post would be edited out I'd say it's a fine collection but I still wouldn't want another sticky. Sorry