It's up to the developer/publisher to want to post on the PlayStation Blog to market their game to the public, which isn't Sony's fault if the devs don't want to use the ready made platform for exactly what Wombat is complaining about. Microsoft doesn't have this option available in any form, so it's all on the developer/publisher to find other means of telling people about their game. It also doesn't help when some of these games are from small devs that either don't know what to do or don't think they can market on there to at least get the word out there. Sony has The Drop every week that gives people a heads up on what's coming for that week and the Monday and Tuesday that follows usually has posts about the games/DLC coming that week, though some weeks are lighter than others.
Major Nelson seems to only care about telling you what has released, his podcast, and major news, but he could care less about what's coming soon or any sort of third-party posts like on the PlayStation Blog. Xbox Wire is weird in that it's a press release site with all of the assets they'd want, but there are occasionally some editorials written by the mysterious "Xbox Wire Staff" that looks out of place since they don't allow comments or any sort of community interaction. Unless I'm mistaken, they also had a site called PlayXBLA that seemed to be exclusively about Happy Wars, Minecraft, and World of Tanks, which has been shut down and redirects to Microsoft Studios Blog. Considering that they have the former head of the PlayStation Blog Jeff Rubenstein working with Major Nelson, you'd think he could show them how it's done instead of splintering things like this so none of them really help anybody.
I really don't know if Wombat would be complaining about the Arcade Archives name if he chose the week that Rygar or Double Dragon were released. It's from Hamster, who is currently doing a lot of work licensing these old games to sell on PS4 as some cheap options for those that have nostalgia for those games.