The latest version of the TPACK newsletter (TPACKNewsletterIssue37) is now available and can be found here (pdf). All previous issues are archived here. This issue is 60 pages long!!! The amount of work being done in this area never ceases to astound me.
As always, thanks to Judi Harris and her team for all the work that goes into this.
Note: Figure ground TPACK design by punyamishra