This is really cool.  Just got an email about an app that lets you see the updates to Bing Maps.

http://bingmapsupdates.cloudapp.net/

The Bing Maps platform gets a makeover just about every month.  We add new places, even better imagery and fresher views on locations near and far – to the tune of tens of terabytes of new content.

To bring the new Bing Maps additions to life, we’ve built an app - with a little bit of help from Silverlight and Azure - that shows what’s new this month and in months gone by.  You can sit back and watch us take you on a tour of the new hotspots or explore for yourself here or at www.microsoft.com/maps. There’s also a short video intro to it here and more info on Chris Pendleton’s blog.  Make sure you check back each month to see what’s new.