We are now in the 3rd to 5th month (depending on how you count) since Maemo 5 reached users and have had one major update (and a couple of minor ones) with a second major update imminent. Some bugzilla comments (https://bugs.maemo.org/show_bug.cgi?id=6394#c5) already indicate that there is also going to be at least a "PR1.3" update, but nothing is known beyond that.