In recent usage, the phrase signing statement has referred mostly to statements relating to constitutional matters that direct executive agencies to apply the law according to the president's interpretation of the Constitution.
You might need to exercise a little bit more patience. Though Microsoft (MSFT, Tech30) said a month ago that Windows 10 would become available on July 29, Microsoft clarified on Thursday that everyone won't be able to upgrade on that day. Microsoft will roll-out upgrades slowly, in waves.
Windows 10 is coming this summer in 190 countries and 111 languages. Today, we are excited to share more details on the Windows 10 Editions. We designed Windows 10 to deliver a more personal computing experience across a range of devices. An experience optimized for each device type, but familiar to all.