Easily one of the biggest concerns about Windows Phone 7 is not so much the initial limitations, but rather how often Microsoft updates the OS to address those. Fact is, Microsoft does not have a track record to go by, leaving many potential power users here...skeptical.
Today we have some good news in this regard as Microsoft has already updated the developer release of the OS via the Zune software as evidenced up above (from MobileTechWorld). Of course we won't know how often this will happen after release, but it goes to show how easy the process should be in theory. Looks good to us.
The other good news is that Microsoft is populating the store with more apps, including "NY Times Reader, Yelp, YouTube, AT&T Uverse, Stocks, Weather, Translator". The rest can be seen in the collage below. Before there were maybe 3 or 4 apps (some of which were recently demoed), so this is an improvement for sure. Also worth noting are the icons, there seems to be two themes: basic Metro and full on color.
[Thanks, Daniel G, for the tip!]