The following sources were cited in SAP Digital Futures Issue 10 Enveloped by Ambient Intelligence.

1 trillion sensors could be connected to the Internet by 2022.
Deep Shift: Technology Tipping Points and Societal Impact (World Economic Forum, September 2015), http://www3.weforum.org/docs/WEF_GAC15_Technological_Tipping_Points_report_2015.pdf.

Appliances and home automation will account for more than half of household Internet traffic by 2024.
Deep Shift: Technology Tipping Points and Societal Impact (World Economic Forum, September 2015), http://www3.weforum.org/docs/WEF_GAC15_Technological_Tipping_Points_report_2015.pdf.

The first “smart city” with Internet-connected, automated roads, services, and utilities will emerge by 2026.
Deep Shift: Technology Tipping Points and Societal Impact (World Economic Forum, September 2015), http://www3.weforum.org/docs/WEF_GAC15_Technological_Tipping_Points_report_2015.pdf.

Fabrics that can charge electronics − or incorporate them − already exist.
Blaine Friedlander, “Nanotech Transforms Cotton Fibers into Modern Marvel,” Cornell Chronicle, July 7, 2015, http://news.cornell.edu/stories/2015/07/nanotech-transforms-cotton-fibers-modern-marvel.

Over 8 billion ambient intelligence smartphone apps will be downloaded in 2020.
“Location-Based Ambient Intelligence Is the Next Big Leap in Consumer Applications,” ABI Research, February 26, 2015, https://www.abiresearch.com/press/location-based-ambient-intelligence-is-the-next-bi/.