Many of my sitemap submissions are gone! Sites, such as PRO-Webs which has been live for years and years suddenly have no sitemap in Google Webmaster Tools. Now, I do check Google Webmaster Tools rather infrequently, but last month the sitemaps were all there, alive and well.
Google announced that you can now link your Google Webmaster Tools verified site(s) to a Google Analytics profile when they use the same Google Account. This task is a simple one that integrates the data between Analytics and GWT, making your Analytics profiles available in GWT and sharing some reports and abilities between the 2. Just another means to manage your data more effectively and keep things neat and tidy.