Microsoft seems to be putting on the heat with its Windows 10 previews, bringing out Build number 10061 out of the woodwork. And if the rumors are true, it better be really cranking up things. In this latest Technical Preview, Redmond teaches the Mail and Calendar app a few new tricks. Users who like to personalize their Windows experience will also be in for a treat. And the Continuum experience that switches back and forth desktop and tablet modes has seen a few nips and tucks, as well as more options to tweak things to your liking.