Just downloaded v.2.7a. Besides the two reported diffs between v2.7a and v2.7, I note one other diff which was not previosuly reported. Looks insignificant, but just checking.

2.7 line 476 shows:
echo '</div>'; //ditch-tab-pane-wrap

2.7a line 476 shows:
echo '</div id="duh">'; //ditch-tab-pane-wrap

- Woody